Unusual dagger, billfish or bone “blade”?

[Rick]

Originally Posted by werecow

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

Mighty large for a baculum, Ian.
I used to get Swordfish bills from the Sword boats when I was working in Menemsha on a yacht summers many years ago. Although the material looks sort of like part of a swordfish bill; I don't think it is.

I too am biting my tongue.