AP, just a thought: you might try contacting the office of the military attache at the Israeli embassy in Washington. IIRC the Israelis were pretty quick to arm up in the '50s. They eventually acquired FN-FALs for their front line units, and that was the main battle rifle in the 6-day war. The FN-FALs were kind of sensitive to sand and dust and were in their turn replaced by the Galil, beginning in the early '70s.

Your rifle looks like an armory queen. I'd think it has some collector value because the numbers match, it's got the crest, it's in good shape and it has its bayonet.

Good luck with it!