I would like to restore a 1939 Ford11/2 ton Panel but need to identifythe company that did the conversionback then. The only clues are: "TB766" on brass tag in pass.side door jam. The model of the truck is a 99T('39 Ford 11/2 tontruck with 95hp engine) Does TBrefer to "Telephone Body" or to the name of the conversion company?It doesn't match the serial numberof the vehicle. Or does "TB766"refer to something else? Sorry there's no picture here, but the sides and insides of thepanel have been filled with hugewelded cabinets that protrude outabout 4" on each side. The closestthing to it today would be a service truck body-but mine is built into the panel truck. Thework was proffesionally done way back when. The fit and finish ofthe conversion is excellent. Only a small part of the panel isaccessable from the outside-aboutthree feet at the rear doors and ofcourse the driving compartment. This is not a "box" van, ratherit's a pretty panel body shape converted with metal cabinet doorson the sides behind the driver'sand pass. doors. Any ideas?