I saw them. Seen that couple For Sale myself, I think on Craigslist. What are your plans for the wrecker unit. It's a short wheelbase Traffic King model 515E. Most 515's have the tool compartment in front of the mast.

Spanky Hardy
Collector Of Fine Old G.M. COE Trucks & Antique Holmes Wreckers

1948 Chevrolet 5700 COE Holmes HD W35 Wrecker
In the Stovebolt Gallery
More pictures on Photobucket

1950 GMC 250 1-Ton
In the Stovebolt Gallery