Now showing: Trieste Zone B - Postage stamps - 1949 - International Labor Day - 1 stamps.
1. May WM: None Sheetsize: 50 Perforation: 12½ x 11½
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![[International Labor Day, type C]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Trieste-Zone-B/Postage-stamps/C-s.jpg)
