Guam
Praegu kuvatakse: Guam - postmargid (1899 - 1930) - 1 margid.
1930
Philippines Postage Stamps Overprinted "GUAM - GUARD MAIL"
8. aprill WM: mitte ükski perforatsioon: 11
![[Philippines Postage Stamps Overprinted "GUAM - GUARD MAIL", Tüüp C]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Guam/Postage-stamps/C-s.jpg)
![[Philippines Postage Stamps Overprinted "GUAM - GUARD MAIL", Tüüp C1]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Guam/Postage-stamps/C1-s.jpg)
