RUSSIA – 1923, 5r deep green Air Mail Stamp – Worth US.$25,000

This 5r deep greenis a pictorial airmail USSR stamp that was prepared in August 1923 but never placed into use. The common design of this valuable issue features a Fokker F-111 in flight. Philatelists say only 25 specimens were printed on white paper, never hinged and post office fresh, in a very fine condition was offered in April 2021, Raritan Stamps auctioned a 5r green, wide ”5”, printed on ordinary paper, in an exceptional condition without gum creases, for $25,000.