Now showing: USSR - Postage stamps - 1929 - First Pioneer Congress - 2 stamps.
18. August WM: 1 Sheetsize: 100 Design: D. Golyadkin Engraving: photo Perforation: 14½
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![[First Pioneer Congress, type AP]](https://swmedia-4cd6.kxcdn.com/media/catalogue/USSR/Postage-stamps/AP-s.jpg)
![[First Pioneer Congress, type AP1]](https://swmedia-4cd6.kxcdn.com/media/catalogue/USSR/Postage-stamps/AP1-s.jpg)
