Poland. (Field Post offices). 1945. Registered Air Mail United States Postal stationery envelope 6c orange upgraded with Great Britain SG 470, 6d purple and SG 490, 3d pale violet tied by 'Geowna Poczta Polowa/104' double ring with boxed hand-struck 'R/Glowna Poczta Polowa/104' with bilingual circular 'Examined by Censor' in violet addressed to Scotland with Unit cachet on reverse. Very attractive item from the Polish Army in Scotland.