GREAT BRITAIN – 1883, 10sh Grey Green on Blued Paper – Worth US.$40,000

10sh Grey Green on Blued Paper is one of the rarest regularly issued unused stamps of Great Britain. In March 2019, An incredible well-centered example of 10sh Grey Green on Blued Paper featuring “deep rich color on lightly blued paper, small inclusion on gum mentioned for complete accuracy only” appeared at Siegel auction sold for $40,000.