Anyone familiar with this

[Logger_78]

 

[d42jeep]

It seems like there were early tappet wrenches U1112 and extra thin V1112 but I don’t know about your X1112 from 1929.
-Don

 

[RTM]

It’s listed in the price list here, but I don’t see it in the catalog.

Plomb Hand-Forged Tools for the Automotive and Aviation Industry : Catalog No. 11 : Plomb Tool Co. : Free Download, Borrow, and Streaming : Internet Archive

28 p., illus., 26.7 cm, trade catalog

archive.org

 

[Logger_78]

I have a ton of old wrenches like this in the snap on toolbox I bought for a hundred bucks.

 

[four.cycle]

Hello Logger_78 and welcome to the site!

You might want to keep this link handy.

and this one