1949 a collection of 7 Yunnan Gold Yuan covers, f.w. SYS or revenue stamp surch Gold Yuan issues, tied by Mile, Lusi, Weisi, Tunghai and
1949 a collection of 7 Yunnan Gold Yuan covers, f.w. SYS or revenue stamp surch Gold Yuan issues, tied by Mile, Lusi, Weisi, Tunghai and other cds., reflecting the frequent postage adjustment in 1949
