I looked around on my pc as I remember I had something written from Brett.
Found this letter:
He said 1.075 bayonet made, of wich 1.064 delivered, so it is probably what you were referring to.
Me and Fred were discussing about the opportunity to tell Howard to not have all his M9s "custom marked".
While I can tell you that the USMC engraving is really well done, it should not be used on scarce variants.