1937-41年中国各地寄海外实寄封一组12件，贴各版帆船，孙像，烈士像邮票，销各地邮戳，包括航空，平信，挂号等不同邮资，内容丰富，难得抗战时期邮政史素材，市场价值高，请预览ChinaCollections and Ranges1937-41 a group of 12 to oversea covers, included air mail, registered letter, bearing different frankinf of Dr.Sun, Junk and Martyr, tied by different cities c.d.s., good to fine.
