What is the value of the box of 500 if these 2005 uncirculated Denver Mint nickels had a partial face bust on the obverse and a bison facing right on the reverse?

The book value for a single MS-60 2005-D Bison Nickel is 22 cents. That would be $110 to buy them retail one at a time. If you are lucky, you might find a dealer to buy the box for about 6 cents each, or $30, because it will take him years to sell enough to get his investment back.

Remember, the "partial face" is NOT an error, even though some people assume it's a mint mistake. That particular design was used only on 2005-dated nickels and was replaced with the current forward-facing portrait beginning in 2006.