I have a Caterpillar D-8 with Chassis Serial Number 1A-79 and the engine serial number "Power Unit Number 1A469IOK". The only thing I've been able to find about these serial numbers are that the 1-A serial numbers were experimental tractors. Can anyone give me some information on this tractor? I'm interested in knowing what year it is and what value it might have.
On this thread - Post #20 - I added a couple of pictures.