Ditunjukkan sekarang: Amerika Syarikat - Jabatan setem itik dalaman (1960 - 1969) - 1 Setem-setem.
1961
Department of the Interior Duck Stamps - Mallards
1. July WM: Tiada Corak: Victor S. McCloskey, Jr Perforasi: 11¼ x 11
![[Department of the Interior Duck Stamps - Mallards, jenis W]](https://www.stampworld.com/media/catalogue/United-States/Department-of-the-interior-duck-stamps/W-s.jpg)
