I havent posted in here for a long time so i mixed it up a bit. The picture is a D4 i had a few years ago. The cab was built by Finning our local Cat dealer. That cab was pretty standard on most Cats in the bush here in British Columbia. It wasnt R.O.P.s ,but was decent protection from falling limbs and broken winch wires.
                            
                            
                            The tag looks like Medford Steel & Blow????? maybe blow pipe. Medford OR. Mfg 1971 for D47U. This is a 1959 machine. Has a rubber isolation of sorts in all six connections. Tractor has heavy fender group 3/8 thick. I am missing the belly pan if someone has a late model D4 with wet clutch and heavy fender group.