Todd has one, too. See post #8 and then post #17, where he shows it with similar, crudely hand-forged wrenches with the more familiar and more common "CORNWELL-A", "CORNWELL-B", etc markings system, where AA and Todd, at that time, anyway, were assigning the -A to 1927, the -B to 1928, and so forth.
Which is a good segue.
Other than AA's and Todd's P30 (1/2 x 9/16) wrenches, I had never seen an example with any other model number in that LNL format..., until your coolass lot.
How are you deciphering these LNL markings? What does the first Letter represent? What does the Number represent? And what does the second Letter represent?
Please show or link examples of early Cornwell wrenches with these letters, Bill. I'm not sure what you're referring to.