Item seems to be gone.

F-14 is a weird game because a lot of the things listed as prototypes seem to randomly occur throughout the production run, and are not confined to any particular points in time. My game has the clear beacons, clear flashers in the back, but is missing the extra flashers and has the standard cabinet design.

My hunch is that Williams made the changes, and then the game was so popular when they ran out of the new parts they randomly slapped whatever they had lying around in the games to keep them coming out of the factory. It's very confusing though, as the way IPDB labels it seemingly half of the F-14s I have seen are prototypes.