After the research I did on wikipedia, (I know they are not necessarily the greatest source) I found no reference to blue tractors. It said they were painted Battleship Grey until sometime in the ’30′s where they switched to red, and from my understanding they were never blue.
I can’t answer your question as to models or years, but your uncle is right, they did sell some blue tractors. They still sell a IH Blue paint in antique tractor parts.
After the research I did on wikipedia, (I know they are not necessarily the greatest source) I found no reference to blue tractors. It said they were painted Battleship Grey until sometime in the ’30′s where they switched to red, and from my understanding they were never blue.
I hope that helps.
I can’t answer your question as to models or years, but your uncle is right, they did sell some blue tractors. They still sell a IH Blue paint in antique tractor parts.