Details
unused Block Larger Than four PLATE II: 1928-30 Redrawn 1a. deep ultramarine, the unique experimental pin-perforated unused sheet of sixty four discovered by E.A. Smythies in the Kathmandu Treasury stock (ref. Hellrigl/Vignola page 108). One of the major items of Nepalese philately. Photo
Further details
Note: Another such sheet cancelled-to-order exists