Now showing: United States - Postage stamps - 1971 - Antarctic Treaty - 1 stamps.
23. June WM: None Sheetsize: 50 Design: Howard Koslow Perforation: 11
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![[Antarctic Treaty, type AGP]](https://swmedia-4cd6.kxcdn.com/media/catalogue/United-States/Postage-stamps/AGP-s.jpg)
