You might notice how similar this dagger is to the WW2 pattern Fairburn Sykes Commando Dagger . For this reason it is interesting to read https://www.sheffieldcollectablekni...-commando-knife
which has plenty of pre 1900 detail attached to it. Who would carry such a knife ... they look dangerous to me?
although I did hear of one Commando climber who used these as piton devices and when doing ice wall work.