Erik Boeré Philatelie : Francobolli in vendita - U.S.A.
Ora in esposizione: U.S.A. - Francobolli postali (1847 - 2024) - 2 francobolli.
1948
Palomar Mountain Observatory
30. Agosto WM: Nessuno Dentellatura: 10½ x 11
![[Palomar Mountain Observatory, Scrivi QE]](https://swmedia-4cd6.kxcdn.com/media/catalogue/United-States/Postage-stamps/QE-s.jpg)
1948
Palomar Mountain Observatory
30. Agosto WM: Nessuno Dentellatura: 10½ x 11
![[Palomar Mountain Observatory, Scrivi QE]](https://swmedia-4cd6.kxcdn.com/media/catalogue/United-States/Postage-stamps/QE-s.jpg)