Lot 51400 – 1922-27 £10 black & green mint l.h. with variety watermark crown to right of CA

1922-27 £10 black & green mint l.h. with variety watermark crown to right of CA (as seen from the back of the stamp), very fine and fresh with only the faintest trace of a hinge, this stamp being the discovery example first recorded in 2006, a rarity of these sought-after high value issues, cert. BPA (1984, not mentioning the variety) (S.G. £22’000).