Indian Convention States. (Great Britain). 1939. Envelope addressed to Swansea bearing Patiala state SG 83, 1a carmine tied by Patiala double ring underpaid with circular 'T' hand-stamp and bearing Great Britain postage dues SG D27, 1/2d emerald and SG D 29, 2d agate tied by Swansea arrival with hand-struck '2 1/2d' Nice item of underpaid mail.