GREAT BRITAIN MACHINE CANCEL SPECIALIZED COLLECTION. extraordinary holding in seven binders and totalling hundreds of cards and covers, many with exhibit-type writeups, emphasis on Columbia, Krag, and Universal devices, note individual items marked up to $70-90 retail, nice selection of 1924 British Empire Exhibition cancels, generally fine to very fine throughout, a collection which would be extremely difficult (if not impossible) to duplicate, ideal for further expansion into a comprehensive exhibit or breakdown for resale, viewing a necessity