Postal Envelope - Bab-e-Khyber

Increased air mail tariff for Japan and some African countries. New design showing Bab-e-Khyber in pale brown and blue. Lozenges in same colours but air mail label in blue.

Date of Issue: October 15, 1971
Airmail label: 38.00 x 27.00 mm
Denomination: Re. 1/- pale brown and blue on greenish blue