TillaMurphs Posted February 1, 2010 Share Posted February 1, 2010 (edited) We recovered one of the USGS gold-colored disks yesterday and would like to know more about them. The one we ran into was set in 1924 and it is still incredibly bright. There was no hint of corrosion. About a year-and-a-half ago m&h started a very good thread on this subject here: Metallurgy? However, at that time there did not seem to be a definitive answer on the metallurgy of these disks. We looked in GeorgeL's excellent paper (Bottles, Pots, Pans...) and did not find anything. We wanted to run this up the flagpole again to see if there are any more ideas? In our area, many of these were set in 1913 and 1924. Besides the pictures previously posted by TheBeanTeam and MegaScooter in m&h’s original thread, here are a few others from Oregon (photos are not ours). QE0391: QE0696: RD0298 RD0322 Edited February 1, 2010 by TillaMurphs Quote Link to comment
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