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Issued by:
Vietnam
Function:
postage
Date:
9/17
/
1991
Issue:
25th Anniversary of Posts and Telecommunications Research Institute
Denom:
200d
Color:
multicolored
Design:
Watermark:
unwmk
Perf:
13
Catalog value:
Prev:
8/29/1991 5500d issue=Philanippon '91 dt=moths and Butterflies (1991) d=Heliconius melpomene (1991)
Next:
3500d perf=13.25x12.75