We have decent history on the tug. I have some information gleaned from the Clark tug group on Yahoo. And Joe did in fact post a Product ID card for the tug. Cool that Clark still has records back into the 30s. Know it entered service March 16, 1942. Also know it was refurbished 4/4/51 at the JQMD. We think that's when it was re-engined and painted yellow, as was the paint scheme it seems for some ground equipment in the 50s.
At any rate, OD is the color of choice. The big question is on markings. Frankly, I don't think there were many. Serial number on the engine covers and maybe on the bumpers. Don't think it's like an aircraft with stencils all over the place. But it's hard to tell. It's not like tugs are in the forefront of military history.

Every once in a while, though, we do see them in photos and videos.
We're also trying to track more history on the tug. Dunno if the military still has, or even kept, records of support equipment throughout it's government service. Anyone offering ideas on where to search for such information would be greatly appreciated.
This whole project started because we didn't seem to have enough tugs on the Warbird Jet Ramp at OSH to move everything in a timely fashion. We were all over the place, show center, WIR, and all over the north end. So I bought another heavy tug to assist.
Anyway, hoping some of you will get an opportunity to have your WARBIRD tugged by H-1583 beginning this Spring. We were hoping to debut at the Doolittle Reunion, but getting our foot in the door there seems nearly impossible. But we should be at OSH and TOM.
The work in progress:
