J H Williams " gun wrench"

[wrench136]

J H Williams 1/4" #501 .One side also marked 14 741 355. Other side marked 30-cal-posi set screw.
Any one have more info?

 

[four.cycle]

^ something to set up your Vickers .30 caliber?

somebody might recognize the number on the back. let me know if you're looking for more of those!

 

[Private Lugnutz]

That looks like a mis-struck "POST", not "POSI," to me. That might indicate it was for a set screw on some kind of post on some kind of mount for a .30-cal, not the .30-cal itself. Or a post type sight. Either way, I doubt Williams applied those markings. I don't recognize the number or even the format, but it smacks of being an Ordnance number of some kind, not a Williams number.