![1868[5C] PR64 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237256_1m.jpg?v=8C659044AE31270)
7101 - 1868[5C] PR64 PCGS.Heritage Rare Coin Galleries
<B>1868<5C> PR64 PCGS.</B></I> The date is lightly repunched south, visible on all digits except for the 6. Dusky yellow-gra...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1869[5C] PR64 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237257_1m.jpg?v=8C659044AE31270)
7102 - 1869[5C] PR64 PCGS.Heritage Rare Coin Galleries
<B>1869<5C> PR64 PCGS.</B></I> Boldly struck save for minor weakness on a pair of the reverse stars, with a coating of milky...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1870[5C] PR64 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237258_1m.jpg?v=8C659044AE31270)
7103 - 1870[5C] PR64 PCGS.Heritage Rare Coin Galleries
<B>1870<5C> PR64 PCGS.</B></I> Well struck, save for incompleteness on the tops of both of the letters S in STATES, with one...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1874[5C] PR64 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237260_1m.jpg?v=8C659044AE31270)
7105 - 1874[5C] PR64 PCGS.Heritage Rare Coin Galleries
<B>1874<5C> PR64 PCGS.</B></I> Sharply struck and carefully preserved, with milky patina in the mildly reflective fields, an...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1875[5C] PR64 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237261_1m.jpg?v=8C659044AE31270)
7106 - 1875[5C] PR64 PCGS.Heritage Rare Coin Galleries
<B>1875<5C> PR64 PCGS.</B></I> Fully struck with rich coloration, deeply reflective fields, and a few faint pinscratches and...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1876[5C] PR64 Cameo PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237262_1m.jpg?v=8C659044AE31270)
7107 - 1876[5C] PR64 Cameo PCGS.Heritage Rare Coin Galleries
<B>1876<5C> PR64 Cameo PCGS.</B></I> Fully struck and seemingly contact-free, with flashy reflectivity in the fields, slight...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1877[5C] PR64 Cameo PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237263_1m.jpg?v=8C659044AE31270)
7108 - 1877[5C] PR64 Cameo PCGS.Heritage Rare Coin Galleries
<B>1877<5C> PR64 Cameo PCGS.</B></I> Extremely well mirrored for this proof-only issue and a solid Gem except for a multitud...
Bidding Has ConcludedStart Price : 1,000.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1878[5C] PR64 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237264_1m.jpg?v=8C659044AE31270)
7109 - 1878[5C] PR64 PCGS.Heritage Rare Coin Galleries
<B>1878<5C> PR64 PCGS.</B></I> The second 8 in the date is recut within the lower loop. Well struck and free of bothersome h...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1879/8[5C] PR64 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237265_1m.jpg?v=8C659044AE31270)
7110 - 1879/8[5C] PR64 PCGS.Heritage Rare Coin Galleries
<B>1879/8<5C> PR64 PCGS.</B></I> In the history of proof American coinage, it is highly unusual for the mint to rehub the da...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1881[5C] PR64 Cameo PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237266_1m.jpg?v=8C659044AE31270)
7111 - 1881[5C] PR64 Cameo PCGS.Heritage Rare Coin Galleries
<B>1881<5C> PR64 Cameo PCGS.</B></I> Well struck with dynamic reflectivity in the fields, mild frosting on the devices, and ...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1885[5C] PR63 NGC.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237268_1m.jpg?v=8C659044AE31270)
7113 - 1885[5C] PR63 NGC.Heritage Rare Coin Galleries
<B>1885<5C> PR63 NGC.</B></I> A crisply struck and lustrous specimen with attractive pastel gold, aqua, and rose hues. A sca...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1937[5C] PR66 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237270_1m.jpg?v=8C659044AE31270)
7115 - 1937[5C] PR66 PCGS.Heritage Rare Coin Galleries
<B>1937<5C> PR66 PCGS.</B></I> A suitably struck and deeply mirrored premium Gem with attractive preservation and a hint of ...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1830[H10C] MS66 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237271_1m.jpg?v=8C659044AE31270)
7116 - 1830[H10C] MS66 PCGS.Heritage Rare Coin Galleries
<B>1830<H10C> MS66 PCGS.</B></I> V-8, LM-3, R.2. The A in STATES is high, and a faint die crack passes through the initial s...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1832[H10C] MS63 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237272_1m.jpg?v=8C659044AE31270)
7117 - 1832[H10C] MS63 PCGS.Heritage Rare Coin Galleries
<B>1832<H10C> MS63 PCGS.</B></I> V-1, LM-3, R.1. Star 12 is repunched, and a mint-made die crack connects the wingtip with t...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1858[H10C] PR64 Cameo PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237273_1m.jpg?v=8C659044AE31270)
7118 - 1858[H10C] PR64 Cameo PCGS.Heritage Rare Coin Galleries
<B>1858<H10C> PR64 Cameo PCGS.</B></I> Proof Stars Obverse Half Dimes are a prized commodity among type collectors, but thos...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1859[H10C] PR64 Cameo PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237274_1m.jpg?v=8C659044AE31270)
7119 - 1859[H10C] PR64 Cameo PCGS.Heritage Rare Coin Galleries
<B>1859<H10C> PR64 Cameo PCGS.</B></I> The short-lived 'hollow stars' type, which was replaced by the Legend obverse...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1861[H10C] PR65 Cameo PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237275_1m.jpg?v=8C659044AE31270)
7120 - 1861[H10C] PR65 Cameo PCGS.Heritage Rare Coin Galleries
<B>1861<H10C> PR65 Cameo PCGS.</B></I> Vibrant peach, rose-red, and navy-blue colors illuminate this exquisitely struck and ...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1862[H10C] PR64 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237276_1m.jpg?v=8C659044AE31270)
7121 - 1862[H10C] PR64 PCGS.Heritage Rare Coin Galleries
<B>1862<H10C> PR64 PCGS.</B></I> This Civil War issue half dime shows mottled pale purple and aqua blue toning on the obvers...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1863[H10C] PR64 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237277_1m.jpg?v=8C659044AE31270)
7122 - 1863[H10C] PR64 PCGS.Heritage Rare Coin Galleries
<B>1863<H10C> PR64 PCGS.</B></I> This razor-sharp representative exhibits peripheral swirls of forest-green patina, while th...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1864[H10C] PR64 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237278_1m.jpg?v=8C659044AE31270)
7123 - 1864[H10C] PR64 PCGS.Heritage Rare Coin Galleries
<B>1864<H10C> PR64 PCGS.</B></I> A meticulously struck near-Gem with exquisite mauve, electric-blue, and gold patina. A beau...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1866[H10C] PR64 Cameo PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237279_1m.jpg?v=8C659044AE31270)
7124 - 1866[H10C] PR64 Cameo PCGS.Heritage Rare Coin Galleries
<B>1866<H10C> PR64 Cameo PCGS.</B></I> Sharply struck and carefully preserved, with lovely cobalt-blue, russet-brown, and mi...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1867[H10C] PR64 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237280_1m.jpg?v=8C659044AE31270)
7125 - 1867[H10C] PR64 PCGS.Heritage Rare Coin Galleries
<B>1867<H10C> PR64 PCGS.</B></I> Lovely variegated golden-brown, ruby-red, and sea-green patina. Needle-sharp and impressive...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1867[H10C] PR65 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237281_1m.jpg?v=8C659044AE31270)
7126 - 1867[H10C] PR65 PCGS.Heritage Rare Coin Galleries
<B>1867<H10C> PR65 PCGS.</B></I> Mauve, peach, and navy-blue patina dominates this seemingly fully struck Gem. A lovingly pr...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1868[H10C] PR65 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237282_1m.jpg?v=8C659044AE31270)
7127 - 1868[H10C] PR65 PCGS.Heritage Rare Coin Galleries
<B>1868<H10C> PR65 PCGS.</B></I> Rich sea-green and mauve colors envelop this impressive specimen. Only a couple of grains i...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1871[H10C] PR66 Cameo PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237283_1m.jpg?v=8C659044AE31270)
7128 - 1871[H10C] PR66 Cameo PCGS.Heritage Rare Coin Galleries
<B>1871<H10C> PR66 Cameo PCGS.</B></I> A deeply reflective specimen bathed in peach and aquamarine toning. The obverse, both...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1872[H10C] PR65 Cameo PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237284_1m.jpg?v=8C659044AE31270)
7129 - 1872[H10C] PR65 Cameo PCGS.Heritage Rare Coin Galleries
<B>1872<H10C> PR65 Cameo PCGS.</B></I> Speckled turquoise and violet toning gravitates to the borders on this well contraste...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1873[H10C] PR64 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237285_1m.jpg?v=8C659044AE31270)
7130 - 1873[H10C] PR64 PCGS.Heritage Rare Coin Galleries
<B>1873<H10C> PR64 PCGS.</B></I> An absolutely gorgeous near-Gem, with a deep, even coating of charcoal-mauve patina over bo...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1821[10C] Small Date AU55 NGC.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237286_1m.jpg?v=8C659044AE31270)
7131 - 1821[10C] Small Date AU55 NGC.Heritage Rare Coin Galleries
<B>1821<10C> Small Date AU55 NGC.</B></I> JR-8, R.2. This bold example has silver-gray centers and rich russet and sea-green...
Bidding Has ConcludedStart Price : 410.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1844[10C] VF25 NGC.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237287_1m.jpg?v=8C659044AE31270)
7132 - 1844[10C] VF25 NGC.Heritage Rare Coin Galleries
<B>1844<10C> VF25 NGC.</B></I> The well-known (and much hoarded) low mintage "Little Orphan Annie" Dime. This even...
Bidding Has ConcludedStart Price : 310.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1878[10C] MS66 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237288_1m.jpg?v=8C659044AE31270)
7133 - 1878[10C] MS66 PCGS.Heritage Rare Coin Galleries
<B>1878<10C> MS66 PCGS.</B></I> A scarcer coin in all the better grades of Mint State than other, similar dates. This piece ...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1858[10C] PR65 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237289_1m.jpg?v=8C659044AE31270)
7134 - 1858[10C] PR65 PCGS.Heritage Rare Coin Galleries
<B>1858<10C> PR65 PCGS.</B></I> Breen, in his <I>Complete Encyclopedia of U.S. and Colonial Coins,</B></I>...
Bidding Has ConcludedStart Price : 11.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1859[10C] PR64 Cameo PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237290_1m.jpg?v=8C659044AE31270)
7135 - 1859[10C] PR64 Cameo PCGS.Heritage Rare Coin Galleries
<B>1859<10C> PR64 Cameo PCGS.</B></I> This is one of our favorite type coins in the Seated Dime series. Stars Dimes are gene...
Bidding Has ConcludedStart Price : 625.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1862[10C] PR64 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237291_1m.jpg?v=8C659044AE31270)
7136 - 1862[10C] PR64 PCGS.Heritage Rare Coin Galleries
<B>1862<10C> PR64 PCGS.</B></I> Warm golden-brown and lavender margins cede to lightly toned centers. Sharply struck for the...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1863[10C] PR65 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237292_1m.jpg?v=8C659044AE31270)
7137 - 1863[10C] PR65 PCGS.Heritage Rare Coin Galleries
<B>1863<10C> PR65 PCGS.</B></I> This lovely Gem is deeply toned in gunmetal blue, violet, orange, and gray colors. Nary a co...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1864[10C] PR65 Cameo PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237293_1m.jpg?v=8C659044AE31270)
7138 - 1864[10C] PR65 Cameo PCGS.Heritage Rare Coin Galleries
<B>1864<10C> PR65 Cameo PCGS.</B></I> The cameo effect is greatly enhanced by the moderately toned blue and purple fields se...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1865[10C] PR63 NGC.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237294_1m.jpg?v=8C659044AE31270)
7139 - 1865[10C] PR63 NGC.Heritage Rare Coin Galleries
<B>1865<10C> PR63 NGC.</B></I> A mauve-gray specimen that comes close to deserving a Cameo designation, since the frosty dev...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1866[10C] PR65 Deep Cameo PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237295_1m.jpg?v=8C659044AE31270)
7140 - 1866[10C] PR65 Deep Cameo PCGS.Heritage Rare Coin Galleries
<B>1866<10C> PR65 Deep Cameo PCGS.</B></I> Ahwash-2. A tiny dot at the bottom of the obverse shield between stripes 6 and 7 ...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1867[10C] PR64 Cameo PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237296_1m.jpg?v=8C659044AE31270)
7141 - 1867[10C] PR64 Cameo PCGS.Heritage Rare Coin Galleries
<B>1867<10C> PR64 Cameo PCGS.</B></I> Beautiful cameo surfaces are evenly covered by a film of pale crimson and burnt-orange...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1869[10C] PR64 Cameo PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237297_1m.jpg?v=8C659044AE31270)
7142 - 1869[10C] PR64 Cameo PCGS.Heritage Rare Coin Galleries
<B>1869<10C> PR64 Cameo PCGS.</B></I> Ocean-blue and lilac colors bathe this carefully preserved near-Gem. Well struck excep...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1870[10C] PR65 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237298_1m.jpg?v=8C659044AE31270)
7143 - 1870[10C] PR65 PCGS.Heritage Rare Coin Galleries
<B>1870<10C> PR65 PCGS.</B></I> Exquisite waves of golden-brown, sea-green, and rose-violet colors illuminate this crisply s...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1872[10C] PR64 Cameo PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237299_1m.jpg?v=8C659044AE31270)
7144 - 1872[10C] PR64 Cameo PCGS.Heritage Rare Coin Galleries
<B>1872<10C> PR64 Cameo PCGS.</B></I> Imposing white on black cameo contrast ensures the eye appeal of this reasonably struc...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1876[10C] PR64 Cameo PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237300_1m.jpg?v=8C659044AE31270)
7145 - 1876[10C] PR64 Cameo PCGS.Heritage Rare Coin Galleries
<B>1876<10C> PR64 Cameo PCGS.</B></I> Type One Reverse. Freckles of sea-green and tobacco-brown patina frame the lightly ton...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1877[10C] PR65 PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237301_1m.jpg?v=8C659044AE31270)
7146 - 1877[10C] PR65 PCGS.Heritage Rare Coin Galleries
<B>1877<10C> PR65 PCGS.</B></I> The toning is truly extraordinary on this original Gem example, being a rich blend of lavend...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1879[10C] PR65 Cameo PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237302_1m.jpg?v=8C659044AE31270)
7147 - 1879[10C] PR65 Cameo PCGS.Heritage Rare Coin Galleries
<B>1879<10C> PR65 Cameo PCGS.</B></I> Orange-red and navy-blue patina surrounds the nearly untoned centers. The frosty devic...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1880[10C] PR64 NGC.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237303_1m.jpg?v=8C659044AE31270)
7148 - 1880[10C] PR64 NGC.Heritage Rare Coin Galleries
<B>1880<10C> PR64 NGC.</B></I> Well struck with a coating of bright copper-violet toning over both sides, good reflectivity ...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1882[10C] PR64 Cameo PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237304_1m.jpg?v=8C659044AE31270)
7149 - 1882[10C] PR64 Cameo PCGS.Heritage Rare Coin Galleries
<B>1882<10C> PR64 Cameo PCGS.</B></I> Essentially untoned with just a trace of orange iridescence along the left obverse and...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark
![1882[10C] PR64 Cameo PCGS.](https://dygtyjqp7pi0m.cloudfront.net/i/3509/1237305_1m.jpg?v=8C659044AE31270)
7150 - 1882[10C] PR64 Cameo PCGS.Heritage Rare Coin Galleries
<B>1882<10C> PR64 Cameo PCGS.</B></I> Well struck with gorgeous electric-blue and russet-brown patina, a small lintmark in t...
Bidding Has ConcludedStart Price : 1.00 | Estimate : 1.00 - 1,000,000.00
Details...Bookmark