There is a such thing as acid dating Buffalo nickels, and it is pretty fun and cool to see what date you can get out of them. 1917-1924 Standing Liberty quarters have a high chance of having no date, so I was wondering if there is a way to acid treat the date. I do know it is possible because I have seen listings of coins on ebay that have been acid treated. All of the key dates have the type of date that wears easily, so you could probably find some key dates if you looked hard enough.
An interesting question since the nickel-copper mix in the nickel is very different chemically from the 90% silver (plus copper) in the quarters. Might be worth exploring using some culls from a junk silver bin at the next show
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