1940s a collection of 4 outgoing covers from Yunnan via the Hump, addressing to India, England via the Hump, f.w. SYS, Martyrs and other
1940s a collection of 4 outgoing covers from Yunnan via the Hump, addressing to India, England via the Hump, f.w. SYS, Martyrs and other commemorative issues, tied by Kunming bilingual cds. Censored and resealed in Rangoon or India. Partly further connected with Calcutta-Cairo route.1940年代一組四件自雲南經駝峰航線寄印度及英美封,貼孫像、烈士及其他紀念票。於仰光或印度受檢。部分接續加爾各羅-開羅航線。