2 1/8" X 2 1/2" (52mm X 61mm)

(skirt  ink stamp)            

                                        MADE IN JAPAN

{Maker unknown} 

Picture courtesy Bob Scafe

2 1/8" X 2 1/2" (52mm X 61mm)

(skirt  ink stamp)  MADE IN

                           JAPAN

{Maker unknown}

Picture courtesy Bob Berry

2 1/8" X 2 1/2" (52mm X 61mm)

(skirt  ink stamp)  

{Maker unknown}

Picture courtesy Bob Scafe