I have acquired this arcade coffee grinder and am trying to find which model it is, but cant find one just like this one....the glass top has only CRYSTAL on it and no other marking a few air bubbles in glass dating it to vintage. The main body has ARCADE CRYSTAL and no other numbers and some very nice scroll designs on it and the most interesting thing that makes it even harder to identify this model the crank arm also has scroll designs on it... there are no numbers on the back of it or anywhere else please look at pictures as they will help