630's are somewhat scarce. Only built between 1960 - 63. First at the Rock Island plant (serial numbers start with “6”), and then later at Racine after Rock Island was closed (serial numbers start with “8”) .
The 630’s were an “in between” tractor. With 54 hp, they had 9 more ponies than a 530, but also weighed about 700 lb. more. Kind of a “super” 530. They were also significantly lighter than a 730 and not in the same class as to pulling power. Apparently, Case decided the 630 didn’t really fill a necessary slot in their tractor lineup when they discontinued them in 1963. The rest of the 30 series line continued in production until 1969.
If the serial number tag is still on it, as a diesel row crop Caseomatic it should read 631C for the model number. Tractordata lists a total of 1,181 630’s built. Don’t know how many were diesel row crops with COM transmissions.
The value depends on condition and particularly if the engine is stuck. At the very least, if the engine is not stuck, after sitting for 10 years, you need to pull the injection pump and have it rebuilt. Do not attempt to start the tractor unless the pump is free, otherwise you will be spending even more money to repair the damage.
If the tires are good, and the rest of the tractor appears solid, the general rule of thumb is 2X scrap price for a non-running complete tractor. In my book, I wouldn’t pay more than $1,000 for it even if it was burning a hole in my heart to have it. Jim