Great Britain 1840 - Penny Black on a cover, sent twice

Description
Great Britain 1840 - Penny Black on a cover, sent twice
Postal used

Cover sent with Penny black, turned over and stamped again with penny black and shipped!
Very unusual.
Please view the photos / scans to form your own impression / assessment
Catalogue value: £-,- (Stanley Gibbons 2021).

Lot details
Geographic Origin
Great Britain
From (Year of oldest stamps)
1840
Condition
Postal used
Type of lot
Cover
Has certificate or expert signature
No
Additional information about your lot
Penny Black on a cover, sent twice
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