Just picked up a project F-14. Need some help in determining if it is late or early in the production run. Here's what I can tell you. Model 554 SN 104643 date of man. 87153. No domes on top, no score display ( wiring harness for it is there ) red flasners in the back of the playfield and no flashers under the plastics. By the look of the 2 holes near the missing flashers, it appears to never had a screw driven in the small holes. I feel it is a later production but wanted to make sure before ordering the score display. Can you tell by the score display wiring harness? Thanks for the help.