Argentina 467-468 a ,b pair sheets

Argentina 467-468, a: unsevered horizontal pair of sheets, type A163 at left, A164 at right; b: unsevered vertical pair of sheets, type A163 at top, A164 at bottom, MNH. Michel Bl.2-3. UPU, 11th Congress, 1939. Actual sheets # 035,267 and 020,632 on the glue.