Royal Engineers Series No
A set of numbered covers issued by the R.E. to mark important moments in Corps History.
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RE Series No 17
14 November 1973.
Bicentenary of King's Bastion, Gibraltar 1773-1973.
Special Handstamp: Corps of Royal Engineers Bicentenary of Kings Bastion Gibraltar, BFPS 1387, Sketch of the Rock of Gibraltar in the centre.
See: Wiki King's Bastion
https://en.wikipedia.org/wiki/King's_Bastion
