3 3/4" X 4 1/4" (94mm X 109mm)

(dome incuse)

{Agrob AG}

Picture courtesy Bob Berry

3 5/8" X 4 1/4" (89mm X 109mm)

(dome incuse)

                      A 983

{Maker unknown}

Picture courtesy Bob Scafe

3 3/4" X 3 7/8" (94mm X 99mm)

(skirt incuse) RIG

                    30612

{RIG}

.

Picture courtesy Bob Berry