Viet - Nam. (Malaya - South Viet - Nam). 1972. Air Mail envelope addressed to Saigon bearing Malaysia 10c (pair) tied by Penang date stamp, underpaid with 'T' hand-stamp and bearing South Viet-Nam postage dues SG D 315, 3p (pair) multi-coloured and SG D317, 10p (pair) olive tied by Saigon date stamp with hand-stamp 'Nov 21 1972' in red, detained for 3 years with hand-struck '05 Sep 1975' applied in violet.
Scarce commercial mail from Malaya underpaid with scarce South Viet-Nam postage dues on cover.