75.00USD+ (13.13) buyer's premium + taxes, fees, etc...
SOLD at 2011 Mar 16 @ 15:41UTC-7 : PDT/MST
Did you win this item?
A full invoice should be emailed to the winner by the auctioneer within a day or two.
Two Item lot. Assay receipts from the Boston and Colorado Smelting Company at the Boulder Agency. The first receipt dates October 3, 1870. It is signed by H.R. Wolcott. The ore was all high grade, yielding between 125 and 78 ounces per ton. The total was valued at $1427.34 for 4 samples. The reverse is blank. Second is an assay receipt dating July 28, 1882. It is for assayed sacks of gold ore from Sunshine, CO: it was an estimated $20.62 per ton. It is signed by assayer E. Williams. The reverse has purple and black writing in the middle. Boston and Colorado Smelting Company was founded by Nathaniel P. Hill, a student and teacher of chemistry at Yale and Brown Universities. He migrated to Black Hawk, Colorado to research and develop more efficient smelting techniques. He opened Boston Colorado Smelting in 1867. It was such a success that he had to open another office in Argo, North Denver in 1878. Hill later entered politics where he was a senator from 1879-1885. Both items in good condition.