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Each silver quarter has both silver value and numismatic historical value. Depending on silver price and demand, each quarter can be worth between $2.75 (or less) - $3.75 or more. Because of Covid19, silver demand is very high, even when "silver price" is low.

So i suppose that when buying a bag of coins that are specific troy weight how would you calculate their value? I am thinking (troy weight)(percentage of metal)(spot)=value in spot currency.