raw Trade Dollars - worth the risk?

With all the copies coming out of Asia, are trade dollars just like raw smaller gold?
Some obviously poor fakes are easily detected but the better ones, do you need to know the die pairs and characteristics for each date/mm combination?
An example follows, looks pretty good, but is it authentic?
Some obviously poor fakes are easily detected but the better ones, do you need to know the die pairs and characteristics for each date/mm combination?
An example follows, looks pretty good, but is it authentic?
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Rich
FrederickCoinClub