Cambodia 1906 Mourning envelope to Saigon / Postage Dues

cover to Cochinchine, bearing Indo-China Yvert 28, 10c Red tied by Pnumpenh Cambodge double-ring, underpaid with TAX handstamp and General French Colonies Postage Due Yvert 19, 10c Brown applied and tied by Saigon Central datestamp on arrival. Very fine item with contents of a price list for the steam ships on the Mekong River. (pt)    ID: 9882