Cambodia. (French Indo-China). 1906. Petit Lady's envelope addressed to 'Baron and Baroness, Pierre de Guy, Administrator (Pnom-Penh)' bearing French Indo-China Yvert 33, 5c green tied by Pnompenh/ Cambodge double ring '31st Dec 06' with 'Messageries Fluviales de Cochinchine' (Cochinchine River Courier Services' menu.
A delightful item paying the un-opened printed matter rate.