Prior to purchasing it, I used my copy of Hartill's Cast Chinese Coins to identify it and determined it was Hartill #22.597, which would make it from 1824-1850. Can anyone else with Hartill's book tell me if they agree or disagree with this identification? Also, it is a little grainy. Normally, a grainy surface would make me think a coin is fake, but I think with cast Chinese coins this is a normal characteristic. I have heard of so-called "Degenerate Examples" being common with some Chinese cash coins, but I do not know much about them. Does anyone here know anything about "Degenerate Examples," what they look like, and if this may be one? Thank you in advance!