Have had this one for a while, still no clue who the logo belongs to, or who made it....

Don't even know what the logo is supposed to be?

Didn't someone just post a picture of that logo recently? Yours reminds me of a bee hive for some strange reason. I think someone guessed it was Snail brand, but was wrong

I know :)  I'll post a pic or two as soon as I can get into the garage.

I recognized that design right away.  Very unique and I only have one example.
Following is from AA, but they don't mention anything about the logo.
New Britain "Double-Groove" Panelled Style
One of New Britain's more distinctive wrench designs featured forged panels with two deep grooves along the handle. These wrenches were produced in open-end, tappet, box-end, and combination styles, and all were assigned NDF-xxx model numbers. Most of the known examples have a plain steel or black oxide finish, but some have chrome plated finishes. We'll call this the "Double-Groove" wrench style, for lack of a better term.

The production dates for this style are somewhat uncertain, but the midpoint time appears to be the late 1940s. Catalog 57M from around 1947 shows the Double-Groove style in most of its wrench illustrations, and in addition, New Britain magazine advertisements from the late 1940s show the Double-Groove style for wrenches. The earlier 56M catalog from 1940-1941 shows the NDF-series wrench shanks with a single panel or rib, which is probably the earlier "Ribbed" style shown in previous figures. By the time of catalog 58 in 1952, New Britain had switched to a simpler flat-shank style for its wrenches, presumed to be the successor to the Double-Groove style. Thus the likely dates of production for the Double-Groove wrenches are from the mid 1940s to around 1950, and we'll use 1944-1950 as the stated range in the following figures.
New Britain NDF-33 Open-End Wrench, Double-Groove Style
Fig. 53. New Britain NDF-33 1x1-1/8 Open-End Wrench, with Inset for Reverse Detail, ca. 1944-1950. Fig. 53 shows an example of the Double-Groove style, a New Britain NDF-33 1x1-1/8 open-end wrench, with the reverse marked "Forged" and "Made in U.S.A." in raised letters.

The overall length is 11.5 inches.

The pic  from AA didn't show up when I copied the test.  Pic's are of my wrench.

Good catch, chopper1!

I didn't recognize it...

Yes, good one chopper1. It had a look that seemed vaguely familiar but there was no way I was going to recall where I had seen it. Good ol' AA.

AhA!..Yep, no question.
It's annoying tho, I had this odd nagging feeling I had seen something like it before...and I have, I have one of those style wrenches, but it's marked and 1/3rd the size, never made the connection.

AA also has one with the 'bump' logo on it, also marked New Britain, and the entire series is back marked 'Forged' (as opposed to drop forged)....

Now the only question is, what the heck is that bump thing supposed to be?
I wonder if AA even noticed the mark, they don't mention it anywhere...

and why did New Britain produce an otherwise unmarked wrench...hmm

Thanx Chopper1 : )

Quote from: rusty on August 13, 2011, 03:54:05 PM

and why did New Britain produce an otherwise unmarked wrench...hmm

Thanx Chopper1 : )

Probably contract production.