On the trail of the Terratrac

Here is a photo of my Terratrac GT-30. I have been receiving Farm Collector for two years and haven’t seen one of these tractors. It makes me wonder if there aren’t many around or they’re just not worth collecting. I don’t know what year it was built. It was built by the American Tractor Co., which was bought out by Case in 1956. I believe it has a Continental engine. I use it to move material with nails or glass in it or when I have to back uphill, where my rubber-tired tractor doesn’t like to go.