General Covers
cover 1912 (17 Mar.) military post, registered red band envelope to Peking bearing, on the reverse, unoverprinted 2c., 5c. and 10c. tied by Chengchow bilingual c.d.s. with two types of Peking c.d.s. alongside, front with the despatch c.d.s. and two strikes of the registered "R"

Details
cover 1912 (17 Mar.) military post, registered red band envelope to Peking bearing, on the reverse, unoverprinted 2c., 5c. and 10c. tied by Chengchow bilingual c.d.s. with two types of Peking c.d.s. alongside, front with the despatch c.d.s. and two strikes of the registered "R"