A Shade of Gray

[Downwindtracker2]

Gray Tools that is. You didn't think it was a women's book did you?. It's a fleamarket find wrench , it's a 11/16 x 19/32 open end. It is marked  Gray Forged Steel , not Gray Chrome Vanadium. I would guess a 2nd line, the forging has a little edge. From what I understand, Gray second line wrenches were Dreadnought in the '30s and I know, more recently,  Maple Leaf. It doesn't show up in the Gray-Bonney catalogue of '52  Anyone have any idea of time frame?