Yes i love the old OSS items, The predecessors of the CIA, and MI6.
That's a great looking dagger, the tip could have broken off from hitting a rib bone, as it was stuck inside a person, and of course, the owner of the dagger would have re-grounded a new tip.
Just my 2 cents worth.
Here is a some new Agency items that i own. If you notice on my one SAD medallion, it has the dagger on it.