cover 1804 (20 Feb.) entire letter addressed to "Lieut. Col. J.W. Cooke, 7th Royal Garrison Battalion, Tower London", rated "1/10" and showing superb strike at left (crossed by light vertical filing crease) with red arrival d.s. (10.5) on reverse. The earliest recorded date of any British Post Office marking. Photo
"TRINIDAD" horseshoe datestamp (Type C.1)
cover 1804 (20 Feb.) entire letter addressed to "Lieut. Col. J.W. Cooke, 7th Royal Garrison Battalion, Tower London", rated "1/10" and showing superb strike at left (crossed by light vertical filing crease) with red arrival d.s. (10.5) on reverse. The earliest recorded date of any British Post Office marking. Photo

Details
cover 1804 (20 Feb.) entire letter addressed to "Lieut. Col. J.W. Cooke, 7th Royal Garrison Battalion, Tower London", rated "1/10" and showing superb strike at left (crossed by light vertical filing crease) with red arrival d.s. (10.5) on reverse. The earliest recorded date of any British Post Office marking. Photo