Argentina
Vertical overprint “S. OFICIAL” upwards. Fluorescent Ffo (strong at front, weak & dark at back). The back side is very dark under UV lamp
| Country: | Argentina |
| Type: | Postage stamps |
| Series: | Official |
| Nominal: | 45 m$n |
| Year: | 1967 |
| Material: | National, coated, fluorescent, horizontally grained & vertically laid |
| Size: | 27 x 37 mm |
| Perforation: | comb 13½ |
Official
