Final clinchers.
All Prologue serial numbers that I’ve seen have the same format as this bike. Number-letter-numbers
The steerer tube has a 4-5 inch white paint area that doesn’t match the creamy color of this frame. The white matches the white-red fade shown in the 1987 catalog for Prologues.
Paramounts of this 86 - 88 era have long, fine, delicate “Paramount” logos on the top tube not the fat decals that were plunked on to this frame.
Head badge is not original.

So it’s a repainted1987 Prologue probably by Panasonic. In this condition I think we would be lucky to get $100 for it
Thank you all for your help here. Great community.