India used in Singapore: 1860s printed envelope to Haverhill, Mass., USA bearing four colour franking tied by a little unclear 'B/172' cancels, red London transit below, '5 N.York Am Pkt date stamp and cursive '16 cents' accountancy,the reverse bearing good example of double oval 'FORWARDED BY BOUSTEAD & Co.' and Singapore date stamp;tiny piece of backflap missing, fine and rare.