Unusual dagger, billfish or bone “blade”?
 

I’m curious to know where this dagger might be from. Doesn’t appear to be particularly old. I’m not sure if the “blade” is a billfish bill or perhaps mammalian leg bone? The hilt is the tip of a cow’s horn. The sleeve or ferrule is thin brass. It’s just held in by friction and is loose as you can see. Any input is appreciated - I know this may just be a curio or knickknack!

Overall length ~45cm
Blade length ~34cm

ww, I suspect from the cross-section shown that this is an unusually long baculum or penile bone. The groove would have been where the urethra ran the length of the penis. The longest examples are reported to occur in walruses (up to 64 cm). The length and straightness of this one may explain why it has been preserved in this form.

Just so you guys know, I am exercising enormous restraint not making any of the dozens of puns that this thread provokes.

Hmm, interesting!