Sixth International Philatelic Exhibition 1966
Now showing: United States - Postage stamps - 1966 - Sixth International Philatelic Exhibition - 1 stamps.
1966
Sixth International Philatelic Exhibition
21. May WM: None Design: Thomas F. Naegele Perforation: 11
![[Sixth International Philatelic Exhibition, type ACC]](https://www.stampworld.com/media/catalogue/United-States/Postage-stamps/ACC-s.jpg)