3" X 3 1/4" (74mm X 80mm)

(upper skirt incuse) 15 "in a rectangle"

.

Picture courtesy Bob Berry

3" X 3 1/4" (74mm X 80mm)

No markings

.

Picture courtesy Bob Berry

3 1/8" X 3 1/8" (77mm X 77mm)

(ear incuse)

Picture courtesy Bob Berry

3" X 3 1/4" (74mm X 80mm)

 (inner skirt ink stamp)  

{Product of AGROB Corp. of Ehrang Germany}

Picture courtesy Bob Berry

3" X 3 1/4" (74mm X 80mm)

 (dome ink stamp)  

                              SELB BAVARIA

{Rosenthal}

Picture courtesy Bob Berry

3 1/8" X 3 1/8" (77mm X 77mm)

(skirt) 413 7

{AEG} 

Picture courtesy Bob Scafe

3 1/8" X 3 1/4" (79mm X 80mm)

 (dome ink stamp)  

                           JS120

{Hermsdorf}

Picture courtesy Bob Berry

3" X 3 1/4" (74mm X 80mm)

 (skirt incuse)

{Sonneberg}

Picture courtesy Bob Berry