I have a small collection of dual marked. I'm always on the lookout for them.
-Don

Spline wrench

Quote from: Lewill2 on January 08, 2026, 09:21:17 AMI have a 4-inch crescent style adjustable wrench that is marked Plomb Tool Co on one side and Proto on the opposite side.

The other side ??
Now I have to go back through my stuff again

I have a 4-inch crescent style adjustable wrench that is marked Plomb Tool Co on one side and Proto on the opposite side.

This has to do with my other Plomb Proto thread
https://www.papawswrench.com/vboard/index.php?topic=27305.0

So I've been sorting though my wrenches and discovered I have a Dual Lable Proto / Plomb Tool Co 3/4" combination wrench !! I've heard of them but I've never seen one before.
Are they as rare as I've heard ? Is this fully true.............

From Ai:
Tools marked with both "PLOMB" and "PROTO" logos were produced during a transitional period following a trademark dispute. The dual branding appeared on tools made in 1948 and early 1949, as Plomb was required to cease using its name and logo due to legal action from the Plumb Tool Company.
 The company initially attempted to use the "PRVTV" trademark in 1948, but this was deemed a paper-only change and not legally valid.
 After a court-ordered shutdown in December 1948 and re-opening in January 1949, Plomb began producing tools with both the "PLVMB" and "PRVTV" marks, which were later replaced by the official "PROTO" trademark.
 The final court order required compliance by March 1950, after which the "PROTO" brand was fully adopted.
 These dual-branded tools, such as the 7/16" and 1/2" box end wrenches from 1948, are now considered rare collectibles.

AI-generated answer. Please verify critical facts.

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I like them all, but I vote Plomb Pebble.

I haven't been on this site that often in the past few years
I had been here quite a bit while my son was going to college. He got his Associates in Auto Science and got hired right up by Jaguar / Audi.
I had been building a tool set for him, try to keep him out of Snap-On truck debt and I caught the bug. Now I have far more than I need and it's time to start sorting through.

He has an impressive set and here I am a few years later with all the leftovers including quite a few Plumb / Protos of which I've become a big fan.

Here's the question - If you were going to keep one set of open end and one of combo, which would you keep? Plomb Cadmium, Proto Pebble, Proto Los Angeles, Proto "Made in America", Proto "Professional" (Stanley?).......

What part of the country did you find it in?
If the west then start looking in oil rig tools
By the Great lakes or near the ocean, shipbuilding
Locomotive is always possible, that could be anywhere.

Quote from: skipskip on December 07, 2024, 08:13:07 PMNice Christmas for someone

Yes it was !!!!!!!

Quote from: geneg on January 01, 2026, 05:34:49 PMthey show up as a German nut pick set with bone or ivory handles. 

Yup, that's exactly what they are and I'm very happy that I got outbid on them in the online auction !!