The 600th Anniversary of the return of Pope Gregor XI to Rome 1977
Ora in esposizione: Città del Vaticano - Francobolli postali - 1977 - The 600th Anniversary of the return of Pope Gregor XI to Rome - 2 francobolli.
Ora in esposizione: Città del Vaticano - Francobolli postali - 1977 - The 600th Anniversary of the return of Pope Gregor XI to Rome - 2 francobolli.
![[The 600th Anniversary of the return of Pope Gregor XI to Rome, Scrivi QL]](https://www.stampworld.com/media/catalogue/Vatican-City/Postage-stamps/QL-s.jpg)
![[The 600th Anniversary of the return of Pope Gregor XI to Rome, Scrivi QM]](https://www.stampworld.com/media/catalogue/Vatican-City/Postage-stamps/QM-s.jpg)
