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To: Don Lloyd who wrote (86248)6/1/2002 9:01:40 PM
From: E. Charters  Read Replies (3) | Respond to of 117068
 
It is strange that with the canadian nickel (or 5 cent piece), which was made of nickel, there were no reports of nickel toxicity. But that is a different, wimpier country and a different era. I haven't seen any of the "V" nickels from 1945 in a long time.

Gold-copper or gold rhodium might be the answer. 18 karat gold copper may be up to 230 brinnel in hardness if annealed.

Probably a titanium nitride coating would be preferred by the mint as it does last a long time. The old silver coins seemed to last however, and they could not have been harder than gold-copper.

Sterling has good wear resistance it would seem.

Gold-nickel is often used in jewelry alloys. I have never heard of nickel toxicity with this alloy.

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