This is one of two hero (metal-bladed) knives made for the Star Trek: The Next Generation episode 'Firstborn'. This is a House of Duras knife that a future Alexander brings back in time to stage an assassination attempt on his young self to trick Worf into raising him as a true Klingon warrior. Now . . . There was a hero version made just for the chat around the conference table. There were (at least) two rubber stunt versions made for the fight scene on the planet. There was also a hero made for a close-up of the knife on the ground. It is this last version that I have.
