French fighting knife. D-Day knife, and a few other names I cannot recall at the moment.
There may have been something similar back in the day? If someone provided the real deal then I obviously missed it.
The majority out there are fantasy/ reproduction pieces made up from slow moving surplus from about 25 years ago.

So leave it up here for all to see. You may have gotten lucky.
Don’t bet the farm on it.

 

I picked one up a repro, cannot remember the website. Can be found on eBay etc. Google d day spike

 

The sheath looks like your standard no4 mk__ British spike.

 

That’s what it’s supposed to look like.
But it really isn’t.

You can still buy them new from IMA. Only $50 plus shipping and applicable sales tax. Maybe $70 delivered?
Repro frog is extra.

IMA attributes the idea to cut down Lebel bayonets used by the Free French mid 1944. Mind you this is after it’s declared a new made item prior to the sales hype.

Don’t ask what they might be worth.
It’s one of those “truth hurts” kind of things.

 

Internet lore is hard to be sure about, one way or another. I've read more than one place that these are entirely fictional and no such thing ever existed in WW2. But I think it's also published somewhere (one of the Cole books maybe?). It certainly never existed as an issued piece of US equipment. Paired with a UK scabbard/frog makes it extra peculiar.

 

The "D-Day, OSS" Invasion Spike Dagger

Hello, First I'd like to say I'm not a blade collector, I truly admire this aspect of collecting and enjoy reading about all eras of the wide variety this fine niche of history offers . I have a few items I enjoy but have already spread myself VERY thin with my interests so I don't actively colle...

www.usmilitariaforum.com

 

They have been selling these REPRO knives since the mid 1990's. More than likely the OP knife or dagger is a repro......albite an older repro.

Here is an IMA ad from 1996.


Keep in mind, IMA started out in England, I have a sword catalogue dated 1993 from IMA with a British address.

 

They used to stuff those in with their packaging. Had a few myself.
As I recall they had both addresses listed?
Notice all the prices are $ and not £, so we know what market they were targeting.

From the same page, notice the 2A1 rifles are in 308 Winchester and DP means Department of Police?
Now I’m going to be busy all weekend correcting my books. 🤨