I do this with very poor condition ancient coins, that are barely identifiable, as well as with World coins, of all centuries, provided that they come cheaply enough. I usually look for interesting and unusual coins in dealers' junk bins. With these sorts of coins, it is usually too much effort and time for the dealer to identify such pieces, so they just give up, and toss them in their junk bins.
The FUN is in fully identifying them. When that has been achieved, you usually find that an identified coin has an increased in value, in a multiple of what you paid for it.
Who says that it is hard to make a profit out of numismatics? I can achieve that quite often!
That's simply because you have had FUN achieving the identification for yourself.
I'll betcha
LWC collectors have achieved the same thing. My numismatic scope is just a little wider.