Prezentat acum: Statele Unite (SUA) - Timbre pentru protejarea păsărilor migratoare - Ministerul de Interne (1950 - 1959) - 1 timbre.
1950
Department of the Interior Duck Stamps - Trumpeter Swans
1. Iulie WM: Niciunul Design: Victor S. McCloskey, Jr Perforare: 11¼ x 11
![[Department of the Interior Duck Stamps - Trumpeter Swans, Tip L]](https://swmedia-4cd6.kxcdn.com/media/catalogue/United-States/Department-of-the-interior-duck-stamps/L-s.jpg)
