Air Mail unused  1920 (Nov.) "-30 cvs.-" on 10c. green, an unused block of four, light hinge thinning at top, otherwise fresh and appealing. S.G. 15, £1600+. Photo
Air Mail unused 1920 (Nov.) "-30 cvs.-" on 10c. green, an unused block of four, light hinge thinning at top, otherwise fresh and appealing. S.G. 15, £1600+. Photo

Details
Air Mail unused 1920 (Nov.) "-30 cvs.-" on 10c. green, an unused block of four, light hinge thinning at top, otherwise fresh and appealing. S.G. 15, £1600+. Photo
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