2 5/8" X 3 1/4" (67mm X 83mm)

No markings

Picture courtesy Don Mecklenborg

2 5/8" X 3 1/4" (67mm X 83mm)

No markings

{Found in the Ukraine}

Picture courtesy Tom Katonak

2 9/16" X 3 1/4" (66mm X 83mm)

(Front skirt) backward number

{found in Zaporozhye, Ukraine}

Picture courtesy Tom Katonak

2 9/16" X 3 1/4" (66mm X 83mm)

(Front skirt) backward number

{found in Zaporozhye, Ukraine}

Picture courtesy Tom Katonak

2 5/8" X 3 1/4" (67mm X 83mm)

No markings

Picture courtesy Bill Ostrander

2 5/8" X 3 1/2" (67mm X 89mm)

No markings

Picture courtesy Dan Wagner

2 5/8" X 3 3/8" (67mm X 86mm)

(base marking) 3 / 3

Picture courtesy Earnest Griffin