PEKING: 1918 Cover sent insured for 25 roubles to Petrograd, franked on the reverse with Russia Chinese surcharged 3c on 3k and 25c on 25k tied by Peking 22.5.18 cds (T&S type 7B), obverse with insured label, received at the Japanese P.O. at Changchun the next day but returned as undeliverable (due to the civil war conditions in Siberia) to the Japanese and then Russian P.O. at Peking, very interesting cover