...the rest of the story (my apologies to Paul Harvey)

I thought I would help out and continue the story that Average-Joe started. After consulting the table that Average-Joe provided, use this formula to calculate the silver value:

Silver price (per ounce) x .0321507466 (weight conversion factor) x (weight of coin in grams) x fineness (from table already provided)

Here's an example for a Mercury Dime:

13.99 (silver price) x .0321507466 x 2.5 (weight of Merc) x .9

This gives us a total of $1.0120251261015

There's another formula that figures the copper content, the only changes are the conversion factor and you need to put in the value of the copper. Then you add the 2 totals together, to get the total value of the Merc Dime.

Hope this helps everyone.