Most látható: Szingapúr - Postage due bélyegek (1970 - 1979) - 2 bélyegek.
1973
Postage Due Stamps - Different Perforation
27. március Vj: 1 Fogazat: 13½
![[Postage Due Stamps - Different Perforation, típus A8]](https://www.stampworld.com/media/catalogue/Singapore/Postage-due-stamps/A8-s.jpg)
1973
Postage Due Stamps - Different Perforation
24. augusztus Vj: 1 Fogazat: 13½
![[Postage Due Stamps - Different Perforation, típus A9]](https://www.stampworld.com/media/catalogue/Singapore/Postage-due-stamps/A9-s.jpg)
