Subject of this thread says it all. I picked up this pair of longwings at a small thrift store where they were dropped off with a pair each of Florsheim Imperials, Johnston & Murphy, and Allen McAfees.
Not much to see on the outsoles:
Size and last are clearly visible.
Anything directly down on the insole has worn off, but if you look deep into the shoe you can see this:
Any information or guesses would be appreciated!