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The example pictured at left also carries the Canadian "broad arrow" mark, indicating acceptance into Canadian service. Long branch bayonets are marked with a superimposed "L" and "B". This example bears the Canadian Government acceptance mark, indicating use by Canadian Forces. The Crown Corporation Small Arms Ltd., Long Branch, Ontario, Canada, made approximately 910,000 No. 4 Mk. II bayonets from 1942–1944. The significance of this mark is not known. The last picture illustrates an unusual mark, occasionally found on No. An example of a viewer's mark "75TZ" is pictured at left. Occasionally, viewer's (inspector's) marks are found on No. From 1943 onwards, Singer bayonets bore their dispersal code, N67. Is, until the government created the dispersal codes in 1943. Singer continued using a similar markings, as used on the Mk. The No. 4 Mk. II was, by far, the most numerous variant, with over 3.3 million units produced. Three firms produced the No. 4 Mk. II: Singer in Scotland, the Savage Stevens Co. I, with the bayonet and socket one solid forging. The No. 4 Mk. II was otherwise identical to the Mk. The No. 4 Mk. II was a simplified version, eliminating the milling cuts required to create the cruciform blade flutes. Socket: "G (Crown) R" over No 4 Mk I" over "S M"īlade (flute): Broad Arrow over "22" (in electropencil) I markings were reminiscent of how Pattern 1907 bayonets were marked, with the royal cypher, type, and maker.
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