Now showing: Trieste Zone B - Postage stamps (1948 - 1954) - 5 stamps.
1. May WM: None Sheetsize: 30 Perforation: 10½ x 11½
![[International Labor Day, type A]](https://www.stampworld.com/media/catalogue/Trieste-Zone-B/Postage-stamps/A-s.jpg)
![[International Labor Day, type A1]](https://www.stampworld.com/media/catalogue/Trieste-Zone-B/Postage-stamps/A1-s.jpg)
![[International Labor Day, type A2]](https://www.stampworld.com/media/catalogue/Trieste-Zone-B/Postage-stamps/A2-s.jpg)
17. October WM: None Perforation: 12½ x 11½
![[Airmail - International Trade Fair, type B]](https://www.stampworld.com/media/catalogue/Trieste-Zone-B/Postage-stamps/B-s.jpg)
![[Airmail - International Trade Fair, type B1]](https://www.stampworld.com/media/catalogue/Trieste-Zone-B/Postage-stamps/B1-s.jpg)
Now showing: Trieste Zone B - Postage stamps (1948 - 1954) - 5 stamps.
1. May WM: None Sheetsize: 30 Perforation: 10½ x 11½
17. October WM: None Perforation: 12½ x 11½
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