Watch List notes:

Russia: OGPU – North Siberian Concentration Camp, set with 1, 3, 5, 10, 25, 50 and 100 Rubles 1937, all with red stamp on back with text "Народный Комиссариат Внутренних Дел СССР - Ка Мур Лагер N° 9", Condition: F to XF. Nice set! (7 pcs.)
[taxed under margin system]