Lot 2250
1857/60, the important collection on 7 pages, includes a 4d original negative (ex Robson Lowe), a covered cliche of a grill cancel and unrelated Amsterdam forged cancel (ex Robson Lowe), 38 reproductions (2 are large size working proofs with extensive notations by Sperati), 6 trial exposures, 9 normal size BPA card proofs, and 5 BPA "jumbo" card proofs, many of the items are ex the Sperati archives and are known in fewer than five examples, this section is a highlight of the collection, all except the various card proofs are ex Carl Walske collection
