I will look at the old Tach to confirm as I replaced with a new one and not 100% sure what it says. I have read that the 35X has a higher rated tach at 1700 RPM instead of the 1540 rpm that are not 35X. The tractor has a instrument panel that only has the Oil gauge, Tachometer and Ammeter gauge. The solenoid is not on the starter but rather mounted on the tractor in behind the air oil bath cleaner. The starter is original from what I can tell with CAV Made in England stamped on it. It has the locking differential, dual clutch, deluxe seat. The current stickers just say 'Massey Ferguson 35' New stickers were put over the old painted ones but appear to be about 6 to 7 inches shorter as if the wrong stickers were installed. The tractor was re-painted and the original stickers painted over on the side of the bonnet. Number stamped on the block in front of the exhaust manifold near the water pump elbow on the left side of the tractor is 19A9797. I bought a second MF 35 tractor last summer and I am trying to figure out what I actually have.
