everycountrycoins Posted March 18, 2009 Report Share Posted March 18, 2009 Hey CoinPeople, I just received a rather large lot of current circulation coins. One of the odd ones that I noticed was a 1969 Canadian quarter that has the gold color it would have if it was composed of brass. However, I don't think that Canada minted any brass quarters. What was done to this coin and how was it probably done? The details of the coin do not appear to have been hurt by whatever was done. I would take a picture, but it's just basically a quarter that is the same color as a loonie. Thanks in advance for sharing your knowledge, Bruce Link to comment Share on other sites More sharing options...
sgard Posted March 18, 2009 Report Share Posted March 18, 2009 It must to be a silver coin? I don't remember date of changing from silvet to Cu-Ni. If silver, perhaps you san to wash coin in low % NH3? Link to comment Share on other sites More sharing options...
everycountrycoins Posted March 18, 2009 Author Report Share Posted March 18, 2009 It must to be a silver coin? I don't remember date of changing from silvet to Cu-Ni.If silver, perhaps you san to wash coin in low % NH3? No. 1968 was the year of the transition from silver to C-N. Link to comment Share on other sites More sharing options...
ccg Posted March 30, 2009 Report Share Posted March 30, 2009 It's NI. The only copper-nickel alloy used in Canadian coins were for 5c from 1982 and later (with some since 1999 being steel). Nickel and copper both have very similar specific gravity #s, so it would be difficult to tell an off-metal from a regular piece that was plated. But since it'd be unlikely that there's a planchet for another coin (in brass) of the same size, weighing it and comparing the weight to another 25c would probably be the easiest way to tell. Link to comment Share on other sites More sharing options...
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