I agree with Terry, however, he made have had a typo. the beginning frame numbers fir the V8 cars were as stated 1,412,708 through 2,071,231 for the 1947 models. The 1948 V8 model began at 1,984,859 through 2,381,447 as your post stated. Never wasting anything Ford would continue to use already produced parts in the next model year until the supply was exhausted. Also, as stated by Terry the prefix on the frame is 799A for 1947 year cars and 899A for the 1948 cars. Remember serial numbers were engine numbers and put on the frame at assembly. All engines at that time were built at the Rouge assembly plant and given sequential numbers. Original cars also have the serial number on the transmission but NOT on the engine.
Seems if the number you have supplied is correct the car was built as a 1948, Another help in dating the car may be the glass bugs (if the original glass is still in the car). Titles as you see often can be incorrect, additionally the 1948 models had very minimal changes from the 1947 models, and many were only instituted at some (not all) assembly plants. LouB.