India Rocket Mail: Sikkim Durbar Rocket Experiments: 1935 (Apr. 8) special printed blue-green card fired from Tashi Namgyal Field to the Post Office, bearing ”ON SIKKIM DARBAR SERVICE” and ”TASHINAMGYAL/FIELD 8/4/35” cachets, slight crease, 410 flown, signed by Stephen H. Smith and with facsimile printed signature of Tashi Namgyal, King of Sikkim.

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Type: Cover