What is the value of a Franklin Mint Collection of Antique Car Coins 1st edition proof set in sterling silver worth?
Its value will be only for the silver it contains.
Weigh them up in Troy ounces (there are 31.1 grams in a Troy ounce), multiply by .925 (the Sterling content), then multiply by the current silver spot.
You can see the current silver spot at www.kitco.com
The Working Man's Rare Coins