Nickel Three-Cent pieces were first released in 1865 because their silver counterpart was hoarded by the public. 

All 3CN (nickel Three-Cent) coins were minted in Philadelphia

Up for Sale:

1865 Nickel Three-Cent Coin

Mintage: 11,382,000

Cu-Ni Composition

75% Copper

25% Nickel

I agree with the coinsnap estimation, it is a good guideline but please take a look at the pictures and feel free to contact me with any questions. 

Thanks for looking!

--Reliable Rich

Reliable Rick's Neighborhood Pawn