1937 Mangka (18 Jan) to USA via Burma, f.w. SYS 4c + Martyrs 1c, tied by Yunnan Mangka cds. Transit Tengchung (22 Jan). Printed matter rate
1937 Mangka (18 Jan) to USA via Burma, f.w. SYS 4c + Martyrs 1c, tied by Yunnan Mangka cds. Transit Tengchung (22 Jan). Printed matter rate example. 2024 (Nov) AVA Auctions, lot 905. 1937.1.18 猛嘎經緬甸寄美國，貼孫像4分 + 烈士1分，銷雲南猛嘎三格日戳。1.22經騰衝。印刷品郵資例子。2024.11 艾華拍賣，拍品號905。
