Bidspirit auction | Port. India 1941(?) registered airmail

Port. India 1941(?) registered airmail cover from Nova-Goa to Quetta Pakistan franked on the back with 4 airmail Imperio issues: 1 tanga (CE 1), 2 1/2 tangas (CE 2) and a 11 tangas (CE 8). Another stamp is completely covered by the censor tape. Registration and airmail labels on the front. Black triangular Bombay censor marks “C 15”.