Turkish knife

[TVV]

Originally Posted by Tim Simmons

That certainly looks like a trench knife made from a bayonet. Looks great and I bet you would have to work very hard to get another one. I am not really a reader of WW1 history but I am unaware of Turkish trenches other than Gallipoli/Dardinelles as far as I know the other Ottoman fronts were on open land. A nice buy. Tim

There were Turkish Trenches in Balkan War, even before WW1, and then during WW1 there were Ottoman troops in Romania...
Perhaps identifying the bayonet thatw as converted to the knife will provide more clues? I wonder what Erlikhan would have to say about this one, but to me it looks as the tip of a yataghan shaped bayonet, perhaps a Peabody-Martini one?