Seems like type 2 seated liberty trade dollar, looks authentic, but also look like it was cleaned, what decreases it's value. You can test it by placing a small magnet on the coin at an angle and let it slide. It should slide slowly off it, as silver is diamagnetic. if it sticks or fall right off it, it is fake. condition could be as ' good' i guess but i'm no expert and there is the pricing:

• https://www.usacoinbook.com/coins/5745/dollars/trade/1875-S/type-2-reverse/