"Mint condition" is not really saying much. Even a fair coin is an MS(2) coin. That said, I feel your coin (if authentic) would rate MS62 at least. Don't suggestion has a lot of merit. I'd follow it.
There is no such thing as anything ms less than 60. Pcgs grading standards state " a mint state coin can range from one that is covered with marks (ms 60) to a flawless example (ms 70).
I went to pcgs and thought it was closest to ms68 because it had the most detail of her dress and the eagles wings. That made me question the authenticity of it. I inherited it from my 100 year old grandfather and he wouldn't have knowingly kept a fake in his collection. Thanks for the feedback it is much appreciated
Perhaps it is the lighting. Perhaps it is the holder. Perhaps it is my trifocals. I see signs of wear on some of the high points, both obverse and reverse. Otherwise I agree with l.cutler. First, have it authenticated, because the trade dollar has, for sever decades, been one of the most counterfeited coins. If authentic, and it grades high enough, have it auctioned. If you wish to retain it, you will know if it is authentic, or not.
If genuine it would definitely fall short of ms68, ms68 would be close to perfect and there are definitely scratches and contact marks. As galenrog states it may not even be ms. Authenticity would be the first thing, getting an accurate weight in grams would be a good first step.
I live in a small Third world village in Mexico. A neighbor, now deceased, asked for help pricing some silver dollars left him by his dad. I took the Bugs Bunny magnet my wife had on the refrigerator and every one of them was magnetic. I.e. bogus as a three dollar bill. At that time, I read that China years ago, made many bogus trade dollars. First test: can you pick it up with a refrigerator magnet?
Like trdking I too, noticed the chop marks on the reverse and they don't even look like genuine chop marks. Either way chop marks lessen the value of the coin. Best bet is have it authenticated and then from there you can get a rough idea as to its REAL value.