Cambodia. (French Indo-China - Postage Due). 1906. Mourning envelope written from Pnom-Penh addressed to 'Monsieur Gros, Captain d' Artillerie a Mission Geometrique, Saigon' bearing French Indo-China SG 34, 10c rose tied by Pnumpenh/ Cambodge double ring '30th Juil 06', underpaid with 'T' hand-stamp and bearing French General Colonies postage due Yvert 19, 10c brown (imperf) tied by Saigon receiver '2nd Aout' on face. Nice item of underpaid mail from Cambodia with letter.