India. (Indian Prisoner Of War Mail). 1942. Envelope addressed to Germany bearing India SG 265, 3p grey, SG 266, 1/2a purple, SG 267, 9p green and SG 268, 1a carmine (2) by 'Field Post Office No 654' date stamp '7th April 42' endorsed 'No 126908 HCS Prisonio Quar Os' on reverse with 'Unit Censor' and framed 'By Surface Route/ Delhi Air' .
Attractive item and scarce Delhi Air Mail hand-stamp.
The framed Air Mail instructional listed by "Ian McQueen' attributed to Delhi in 1948.