used  2d. pale blue, a pair each cancelled "17"; the left stamp defective though of fine appearance. A unique multiple. R.P.S. Certificate (1934) stating "The committee believe the perforations are genuine". S.G. 31b, £3,600+. Photo
used 2d. pale blue, a pair each cancelled "17"; the left stamp defective though of fine appearance. A unique multiple. R.P.S. Certificate (1934) stating "The committee believe the perforations are genuine". S.G. 31b, £3,600+. Photo

Details
used 2d. pale blue, a pair each cancelled "17"; the left stamp defective though of fine appearance. A unique multiple. R.P.S. Certificate (1934) stating "The committee believe the perforations are genuine". S.G. 31b, £3,600+. Photo
Provenance
W.H. Silk, 1944