Sorry I kinda ignored this. I found out that it's a Mack L-Line tow truck but I can't find any information about this particular variation. It's about 4 and half inches long (5 1/2 if you include the red hook on the back). It has a sticker on both sides. Both stickers read "Buick authorized service. Valve in head". On the bottom it says "TOOTSIETOY MADE IN U.S.A". I don't see any serial number on it. The only number I see on the bottom is a 2.