Great Britain stamps 252 255 - philatelic exhibition cover - 1940 Bk2-7

Cover is 6" x 3.8" envelope, cleanly opened at top.
Enclosed note of indeterminate origin notes 'Posted at Bournmouth at the 27 Philatelic Congress of Great Britain on 10th May 1940" (after the Congress was finished). 
Common stamps, but interesting envelope.Incomplete set of two stamps.  
Listing does not include any black mount.  Items will be shipped flat in clean copy paper or glassine. 

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