ChinaLaos 1935 Indo-China Postal Stationery Envelope 5c
5c purple cancelled by Boneng Laos datestamp routed via Savannakhet, addressed to France, underpaid with French Postage dues Yvert 31, 20c olive (pair) and Yvert 37, 50c lilac applied and tied on arrival by Seine datestamp. Very rare cancel. (pt)
