The length is 4 1/2 inches long.
7/16 and 3/8 inch.
Made in USA.
Nicely forged with panels.

Stylish!
No idea though
yours Scott

It's a Barcalo Buffalo.  I have one marked, with 15/16" on one end, and a 1" on the other.  Mine looks like it has the remnants of a cadmium finish.

Yes, Branson you are correct!!  AND THANKS FOR YOUR TIME AND HELP!!!
I went to Alloy Artifacts and found a wrench with the same "geometric panels" as they are named.
Yes, it is cadmium plated. Wonder what the dust from the wire wheel buffer is rated at??
Death, probably.

I now know where to put this wrench in my special 10 drawer tool file cabinet.
In the proper drawer with all the other Barcalo tools, so I can find it easy later on.
Papaw has seen  this tool cabinet and contents, and I'm a little concerned that it is getting so heavy vs the floor joist loading.
Gonna have to sell something , maybe.

QuoteGonna have to sell something , maybe

Yeah, right! You will probably get ANOTHER building!

I just stumbled across more of this type, 1/2x9/16, 15/16x1, 1-1/16x1-1/8, never previously ever ran across this series.  Thank you for finding they were Barcalo. John

Quote from: john k on October 09, 2011, 08:53:23 PM
I just stumbled across more of this type, 1/2x9/16, 15/16x1, 1-1/16x1-1/8, never previously ever ran across this series.  Thank you for finding they were Barcalo. John

You're welcome.  But I just stumbled earlier, and found one at a flea market, one that happened to be marked Barcalo Buffalo.  Made the job of identification a lot easier!  Then I checked it out on Alloy Artifacts, which I learned about on Tool Talk.

I just picked one up this weekend at a garage sale, but it is a 5/8 , 3/4 and has a "A1" code inside one of the triangles on reverse. Anyone know what the "A1" code means or dates to?