Postage Stamps of the Socialist Republic of Vietnam - Year 1991
No.
VN Code
Date issued
Catalog name
VN Catalog
4
613
22-02-1991
2290-2296, 613B-Block 88
12
621
24-05-1991
2234-2340, 621B-Block 90
15
624
15-07-1991
2349-2355, 624B-Block 91
17
626
20-08-1991
2362-2367, 626B-Block 92
19
628
17-09-1991
2375, 628B-Block 94