Sorry it is all shelf like doubling. AKA Machine doubling-Machine damaged-strike doubling-mechanical doubling. I prefer the term Machine damaged as it always reduces the size of the devices. (hub doubling enlarges the devices) The best way to tell is that the normal devices and hub doubled devices show a taper on them making them show a gradual light change getting darker. On the machine doubled examples the color is always the same and reflects without the fading light change.


Note this on these coins. The light is the same color where there is no rounded edge. It is flat and shelf like on machine damage and thus is just one color because of the lack of roundness. Hope this helps.


Note this on these coins. The light is the same color where there is no rounded edge. It is flat and shelf like on machine damage and thus is just one color because of the lack of roundness. Hope this helps.





















































