Large silver "tumbaga" bar #M-66 ("key bar") from the "Tumbaga wreck" (ca. 1528), 21.66 lb.

Currency:USD Category:Coins & Paper Money / Bullion Start Price:16,000.00 USD Estimated At:20,000.00 - 30,000.00 USD
Large silver  tumbaga  bar #M-66 ( key bar ) from the  Tumbaga wreck  (ca. 1528), 21.66 lb.
All items are genuine unless noted. Most shipwreck coins and artifacts come with a certificate of authenticity (please check the description for each item.

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Large silver "tumbaga" bar #M-66 ("key bar") from the "Tumbaga wreck" (ca. 1528), 21.66 lb. About 13-1/2" x 4-1/2" x 1-1/2". When the "tumbaga" bars were conserved in 1993, Armstrong specifically set this one aside as being the "key bar" for the fact that it shows many small disks and other pieces sticking out of its top surface, as the component artifacts were not fully melted and show at least some idea of what they originally looked like, thereby making this one bar, above all the others, far more important, also with clear markings on the bottom (YB13 iUBC XV = 67.3% pure, and IN / DCBCA assayer and 2 partial tax stamps), crude (and seemingly too small) assayer's "bite" in one corner, and worth noting as well that this is one of the heaviest and largest bars, to the point that its top appears to have spilled over the mold (maybe why the artifacts were not totally melted). From the "Tumbaga wreck" (ca. 1528), with Sedwick photo-certificate.