Bidspirit auction | 1935 (28 Oct) Airmail Bombay
1935 (28 Oct) Airmail Bombay - Trivandrum First Flight Cover from Bombay to Madras, only 50 covers flown, very rare
1935 (28 Oct) Airmail Bombay - Trivandrum First Flight Cover from Bombay to Madras, only 50 covers flown, very rare