Auction 333-341 Western Australia & Great Britain - Day 3

1889: ½ d. brown, postal stationery card, used example, sent locally within London, dated 31 August 1898, cancelled by the scarce London Boston Experimental Machine cancel in black, from the first Trial. Has been pinned through the stamp and as a result has two tiny holes and a small scuff, which are not obvious and do not detract. Otherwise, a fine example of this postmark. Additionally, comes with a study of the Boston Machine cancels comprising eleven pages with detailed write-up. Four are dedicated to the second Trial of 1899-1900 and six covering the Edwardian period of the second Trial and later usage. Included in the assembly is a piece franked with an 1881 1 d. lilac tied by the First Trial Boston Experimental cancel dated 10 September 1898. Three pages have seven examples on cover from the second Trial and one page which has six pieces with an illustration of each of the 6 machines used during the Second Trial. The latter six pages have twelve covers, including four Victoria usage.  A scarce group of 20 covers and 7 pieces (27).