2 3/8" X 3 1/4" (60mm X 84mm)

 (skirt incuse)

                     1300 F

{Cmielow}

Picture courtesy Bob Berry

2 3/8" X 3 3/8" (60mm X 86mm)

 (dome inkstamp) / T1 / 68

{Jedlina Zdrój}

Picture courtesy Bob Scafe

2 3/8" X 3 1/2" (60mm X 87mm)

 (dome inkstamp)

{Giesche}

Picture courtesy Bob Berry