Is This An 1877 IHC?

The reverse may help tell the tale if there is enough detail left. All 70's dates with the exception of 1877 business strikes are known to have a bold N reverse. 1870, 71, 72 are known to have both bold N and shallow N reverses. Business strikes of 1877 are known to have only a shallow N reverse (the proofs of that year have a bold N).

If this coin has a shallow N reverse, it would effectively rule out a 73 or 75.

The more I look at this, I think a 5 is also strong possibility.

I can hardly wait for a reverse pic. This one has my curiosity going!

That's the key...if there is enough detail left. This coin has a barely discernible everything, even liberty's face. I don't think there will be enough evidence to conclusively tell if its bold or shallow.