Yeah, the dragon's teeth are there... and looking closely, I think I see a shadow of the removed "8" (though like you said, it's pretty good work).
A 1864 Ca (legit), indeed, is nothing amazing (though def. a tougher date/mm), but a 1864 Ca MM would be an unknown mint/assayer... exactly what the seller is hyping it as.
A 1864 Ca (legit), indeed, is nothing amazing (though def. a tougher date/mm), but a 1864 Ca MM would be an unknown mint/assayer... exactly what the seller is hyping it as.



















