Great Britain and British Commonwealth Official Stamps - Office of Works
Sale No: 78
Lot No:72
Symbol:U
Cat No:O53
1903, King Edward VII, black overprint ''O.W. Works'' on 10p carmine rose and violet, a part of neat Bayswater cancellation of 1904, F/VF and very rare, expertized by R. Calves, SG #O40, £7,000 (Image)