This is a beautiful sheet consisting of 6 stamps, issued by Congo in 2006, depicting antique British trains. Featured on this sheet are the Bury 2-2-0 1837, Stephenson 0-2-2 Northumbrian 1830, Storling 8ft Single 4-4-2 1870-95, Highland Duke Class 4-4-0 1874-88, LNER Class A1 4-6-2 1922-4, and the Johnson Midland Single 4-2-2 1887-1900.
The sheet is Post Office fresh, mint never hinged.