I have us trade dollar coin original 1797,liberty seated in the front and eagle in the back.? in the back it says 420 grains,900 fine and trade dollar,this word under eagle sign, please let me know if anybody know the value of this coin?
Trade dollars were minted from 1873 to 1885. None were ever dated 1797. It's a common fake, probably silver-plated, and worthless.
I am only sure that if you gave a complete description of the coin? I think that @Insider is good at these.