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Stamps of
Bulgaria
,
slblk
color
List
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Catalog
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Gallery
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All issuers
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1 to 2 of 2
postage
1955
, Dec 1
Russian-Bulgarian friendship issue
unwmk
p.
13
X
2s
slblk
Karl Marx Industrial Plant
1956
, Feb 10
National Library 100th issue
p.
11
-
44s
slblk
Bacho Kiro
1 to 2 of 2