To add Artzi's post, Ateret is the modern name to
Vadum Iacob, a Templar outpost on the road to Damascus, its history is well documented. Here is a link to the excavation page:
http://vadumiacob.huji.ac.il/
I have all the official inventory of edge weapon artifacts (documented crusader period) from the Antiquity Authority, and there are only about two dozens of them, mostly fragments. Two full swords were recovered from under the sea and they are totally encrusted in marine deposit, another important sword lacking its cross guard but do have its original wooden plank scabbard; it has been on loan for the past several year to the
L'institut du Monde Arab in Paris. I'm aware of several other partial items in private hands, very few.