Couple of wrenchs from todays auction. The Hayes A375, the Rock Island R1124 and the Blue Point C-1514 (15/64 by 7/32) were easy to identify, but who is that other feller ? Looks to be malleable casting about 3/8 thick with 1/4 opening. Is it a set screw wrench ? The mark on head could be feeder pad. See no purpose for loop opening except for weight reduction. Still a hefty little wrench. Seems way overdesigned for a setscrew wrench. Can anyone confirm its usage or point me in right direction ?