What is the value of a 1915 US half dollar?

Look on the back of the coin to see if there's a small mint mark letter below the eagle. It may be blank or there may be a D or S.

Numismedia lists the following approximate retail values as of 04/2011:

No mint mark (Philadelphia):

Very worn condition - $120

Moderately worn - $300

Slightly worn - $408

Almost no wear - $834

Uncirculated - $1,170 to $20,150 depending on quality

"D" mint mark (Denver):

Very worn - $17

Moderately worn - $35

Slightly worn - $90

Almost no wear - $326

Uncirculated - $450 to $11,510

"S" mint mark (San Francisco):

Very worn - $18

Moderately worn - $43

Slightly worn - $101

Almost no wear - $331

Uncirculated - $450 to $17,750

DISCLAIMER: The retail values quoted are the best available as of the date shown, but may vary significantly due to changes in the precious metals market. Also the wholesale (buying) price of a coin will be less than the selling (retail) price. A reputable coin dealer will be able to give a more accurate valuation based on inspection of the coin.

The Philadelphia issue (no mint mark) Barber Half dollar dated 1915 is a better date coin, values start at $100.00 and go up to $900.00 in the circulated grades. I suggest having a dealer or collector grade the coin for a better idea of value