It sounds like spanky is about right. There are parts that look like Holmes and then there's so many mods or add ons it gets confusing.
I worked mostly with Holmes wreckers starting in the 60's and we had some rigs we called Chicago pipe rigs.
In the pics there are a lot of things that don't add up or make sense, except to maybe the guy who made them.
It's a unique looking rig. Unless you need a wrecker that works good this one has character.
FYI, I'm the guy who came up with the idea of putting turn/brake lights on the mast of a wrecker.
Certainly not had to do, but when the rep from Holmes seen what I had done he took the idea back to Tenn. and soon after that they were putting them out the door equipped that way.
Dan