3 1/2" X 4 1/2" (86mm X 110mm)

(skirt inkstamp) IRUPE / INDUSTRIA

                        ARGENTINA / F.A.

{Maker unknown}

Picture courtesy Bob Scafe

3 5/8" X 4 3/8" (89mm X 107mm)

(skirt inkstamp) INDUSTRIA / F.A.P.A.

                   ARGENTINA / F.A.

{F.A.P.A.}

Picture courtesy Bob Scafe