India Rocket Mail – 1935 (Apr 7) Sikkim Durbar Rocket Experiments – Gangtok Post Office to Durbar High School, cover bearing special blue and yellow 2r. label tied by fancy cachet ”ROCKET EXPERIMENTS/SIKKIM”, dely cds on reverse, fine, 200 flown, signed by Stephen H. Smith. From the L. V. Pont Collection of India Airmails.
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