Ceylon 1918-19 'WAR STAMP' 5c purple, right marginal block of 4, variety WATERMARK INVERTED, SG333w.
Fine quality mint positional piece with original gum, (lower pair unmounted). Minor marginal crease, which barely detracts from overall stunning appearance.
A rare block, with the variety visible in the margin from the face.
The Stanley Gibbons catalogue value is £480+.
