Cover with free frank of POWs, sent on 28/NO/1941 from Leipzig to the sailor Ewald Niewiak (interned in Argentina) via the German Consulate in Mendoza, with double censorship German + Allied, VF quality, rare! (Image)

Airmail cover with partial free frank of POWs (it only paid the airmail rate), sent on 22/SE/1942 from Leipzig to the sailor Ewald Niewiak (interned in Argentina) via the German Consulate in Mendoza, with double censorship German + Allied, fine quality, rare! (Image)

Airmail cover with partial free frank of POWs (it only paid the airmail rate), sent on 9/JUN/1944 from Frankenburg to the sailor E. Pilz (prisoner of war in Argentina), with double German (OKW) + Allied censorship. On back it bears an arrival mark of Villa Ballester 24/FE/1945 (it arrived after 7½ months!), very fine quality, rare! (Image)