ChinaLaos 1923 French Indo-China PSE with Scarce cancel
Postal Stationery Envelope 4c Orange upgraded with Yvert 100, 1c Brown (2) and Yvert 103, 4c Orange tied by Kengkok Laos double-ring routed via Savannakhet and Saigon Central Cochinchine addressed to Switzerland with Emmenmatt arrival. Very rare cancel used in Laos. Ex Wallburg Gold medal collection. (pt)
