In resonse to Old-Smithy's interest in learning more I thought I had better upload some photos from my collection. To my horror I found that I made a mistake in my original posting.

Both the 1913 and 1914 Lithgowicon hook quillon bayonets have what I describe as a square fuller finish at the ricasso. In 1915 this changed to an oval or circular finish. In the attached photos from my collection the first is the 1913, the second is the 1915 and the third shows all and they are from left to right: 1915, 1914,1913. Whilst the bayonet in question on ebay is diffinitely not 1913 it could be a badly struck 1915, however, the poor photos, odd shape quillon and lack of detail offerred by the seller says otherwise. Cavet Emptor

Attachment 26296 Attachment 26295 Attachment 26297