Franklin Half dollar? Depends what kind of shape it's in. here's a price guide according to condition: http://www.numismedia.com/fmv/prices/fnkhlv/pricesgd.shtml Welcome to CT!
at a minimum... $4 to $5 dollars for the silver alone (melt value). Silver has been down recently but many folks still like Frankies. Me too. Grade will determine the actual value... but hard to tell from photo. If really interested, query E-bay for other similar coins, or purchase The Red Book which will describe how to grade the coin and the associated value. Welcome to Cointalk!