Tell me what knife is this?

[Thadeus]

A while ago I found it in old garage but never found out what purpose it had in the past or where it came from. Just recently I started to notice that this knife looks somewhat similar to the old ww2 rifle attachment but I couldn't find any similiar blades to this one.

Will be happy to answer any questions

BTW. On the hilt there is small number 13 or 18 written on it.

 

[danbot]

A while ago I found it in old garage but never found out what purpose it had in the past or where it came from. Just recently I started to notice that this knife looks somewhat similar to the old ww2 rifle attachment but I couldn't find any similiar blades to this one.

Will be happy to answer any questions

BTW. On the hilt there is small number 13 or 18 written on it.

Definitely some kind of bayonet. You may have more luck asking in the knife identification sub-forum.
https://bladeforums.com/forums/bernard-levines-knife-collecting-identification.691/

 

[OrangeBlueOrangeBlue]

What's the length?

Edit: http://worldbayonets.com/Bayonet_Identification_Guide/Germany Ersatz/Germany_Ersatz.html#26021

Go down to "Carter EB34 Ottobre #26021"