1942-1944 a group of 3 Japanese occupied North China covers, all
f.w. North China half value surch issues, reflecting the raise of
postage
1942-1944 a group of 3 Japanese occupied North China covers, all
f.w. North China half value surch issues, reflecting the raise of
postage rate. With exhibit pages
1942至1944年一組三件日佔華北封,均貼用華北半值票,反映了多次郵資變化。附展頁說明。