Where can i find the value and infor on trade dollars dated back in the 1800s?

Trade dollars were minted from 1873-1885. For practical purposes you might say from 1873-1878. The last few years they were produced more for the coin collectors then and the mintage's are extremely low, so the coins are rare. They were struck at the Philadelphia, San Francisco and Carson City mints. There were not intended to be used in the states, but overseas in the Orient. It didn't quite work out that way though. Coin Values prices are usually a little high. You would get less from a dealer, but at least is a ballpark figure. This is a price guide and tells little about the series if anything. I will fill in some info for you as I did above. The mint mark is located above the letter "D" in dollar on the reverse of the coin (eagle side). Since a lot of these coins did get to the Orient, they may have strange marks on them. They are called "Chop Marks" a merchant over there put his mark on the coin to guarantee to others, that it is real and made of good silver. The Trade Dollar is a real interesting series and there are books on them out there, that tell their story. Maybe a library near you has a book on them. Take them to a dealer to see, for their are counterfeits out there, lots of them. The Chinese and people from Thailand love to make copies of this coin series. Hope I have helped.

There is a magazine called "COIN values". I just bought one at Wal-Mart ($4.99). Google "coin values" as well. Should have plenty of sites to choose from.

If you by chance inherited some and are interested in selling them, do a lot of research first. Trade dollars in good plus condition can bring you hundreds of dollars each. If you have a coin dealer in your town, consult them as well, where they can actually see the coins. Don't let them try to buy them from you until you have researched completely. They may see you as a novice and give you less than they are really worth. Look on eBay for similiar coins and see what they are bringing at auction.