What is "the old style block"? The 9N & 2N PTO cover was cast iron, never aluminum, so you have some aftermarket part. The front wheels and tires are car parts, not the OEM 3 x 19's. I see the snap-in battery hood but not the cover. I can't see the RH side of engine but the original should have the 1-Wire/3-Brush generator, the roundcan cutout, the 1-Wire Starter Motor with NO solenoid, horizontal bar aluminum grille, 4-spoke steering wheel, non-pressurized radiator -the big box type, the STANT chromed radiator cap, chromed shifter knob, starter pushbutton, key switch, and ignition 'ON' lamp on dash just to name a few OEM parts. What is that do-hickey by the oil filter canister at 7 O-Clock? Whatever it is it ain't original. Do you have the doglegs? Are they smooth? The steel hood shows some cancer but would be correct and I see the added hole cut for the vertical extended air cleaner pipe. I cannot tell if your rear rims are the OEM 6-LOOP type, or if aftermarket loops. They are not Hat Rims. If OEM loops, they're very rare and worth salvaging so check for cancer from Ca Chl. 1940 serial numbers began at 9N-10243.If you have 10570, you have an early '40 model and if block isn't cracked, a worthy restoration project. Be prepared to shell out big bucks locating OEM parts. I've heard of a few guys recently with 9N-10000-B generators. The alum grille and 4-spoke strg whl can be bought as new aftermarket units but nothing else is repopped today.
FORD N-SERIES TRACTOR SERIAL NUMBER LOCATION: