Lot 559 Newfoundland 1922 15c Vickers-Vimy Essays in Blocks of Four, three different with brown and black imperforate, brown and black perforated, and brown and blue perforated, each in an ungummed block of four, fine-very fine. Listed by Walsh as TE1, TE2, TE3 and priced at $2,240, noting that “it is believed that a sheet of 100 was made for each of the above essays.” Rarely seen in blocks. Estimate $400.