Zobrazujú sa: Singapúr - Doplatné známky (1968 - 1997) - 2 známky.
1973
Postage Due Stamps - Different Perforation
27. marec WM: 1 Perforácia: 13½
![[Postage Due Stamps - Different Perforation, typ A8]](https://www.stampworld.com/media/catalogue/Singapore/Postage-due-stamps/A8-s.jpg)
1973
Postage Due Stamps - Different Perforation
24. august WM: 1 Perforácia: 13½
![[Postage Due Stamps - Different Perforation, typ A9]](https://www.stampworld.com/media/catalogue/Singapore/Postage-due-stamps/A9-s.jpg)
