Auction 333-341 Europe & Overseas Americas (North, Central & South America) - Day 1

1899/1907: Group of four specimen sets, comprising imperforate Scott 137-144 with 'WATERLOW & SONS LTD / SPECIMEN' in black diagonally, each mounted on card with 'S.T. 620' to 'S.T. 627' above, also the set Scott 145-152 with 'ULTRAMAR' overprinted in blue  mounted on card, the Scott 160-165 Calderon with 'ULTRAMAR' overprint in blue also mounted on card, as well as Scott 166-173 overprinted 'ULTRAMAR' in violet mounted to card, a few imperfections, although generally fine, additionally a block of four 1920 Libertation of Guayaquil 20 c. overprinted 'SPECIMEN' in red and hole punch with error 'VIENTE' in value, ex the American Bank Note Co., a scarce assembly. Ex the Brian Moorhouse Estate.