I have here a Republic of China 1 Jiao "Fat Man Dollar" with an extra stamp on the obverse face. I will guess it consists of three characters enclosed in a common rectangular border, so were all applied to the coin or the die as a single operation. My skill set is with Japanese coins, but it is sufficient to suggest to me that the characters in the stamp are not valid Sinograms (for me, Kanji). Can any person comment on this feature? One person has suggested to me it is a “Specimen” coin of Y-326.
Visual inspection also gives the impression the 壹 character on the reverse has an extra stroke at the top compared to Numista catalog images. Finally, one might also think there is some evidence of a bevel on the edge, but no center line or breaks in the edge pattern. My personal opinion is the coin is genuine.
Coin Details
Diameter 19.00mm as measured by vernier caliper
Thickness 1.25mm also measured with the caliper
Weight 2.734gm measured on a calibrated scale with claimed 0.001gm precision
All seem to be in line with an authentic coin.




