Stamps of Belgium, 17 Apr 1957
1 to 4 of 4
postage
1957, Apr 17 unwmk p. 11.5
| X | 2fr | dprose | atom model over globe | |||
| X | 2.50fr | grn | atom model over globe | — | — | |
| X | 4fr | viobl | atom model over globe | |||
| X | 5fr | mar | atom model over globe | — | — |
1 to 4 of 4
| X | 2fr | dprose | atom model over globe | |||
| X | 2.50fr | grn | atom model over globe | — | — | |
| X | 4fr | viobl | atom model over globe | |||
| X | 5fr | mar | atom model over globe | — | — |