There was a Burgundy model that had a solid throat bridge with the same name.
You might be thinking of the
Prince Response. It came along a few years later. That throat bridge was its selling point: it was marketed as the first frame to have a throat deliberately thinner (than the rest of the frame) to give a softer response at contact. It was a successful design that you can still see on the Fischer/Pacific Pro Number One and Babolat Pure Drive frames. Others, too, presumably.
My college roommate played with the Precision Graphite when I played with the Comp. (We'd both upgraded from the venerable Pro!) Sanglier pretty much covered the Precision Graphite's story in the excellent post above. Some context: in the early 80s, graphite still made a frame very expensive, so most brands offered less-expensive composite frames that cut the miracle material with fiberglass, and a frame's percentage of graphite was proportional to its cost, stiffness, and status in the brand's lineup. Most Prince players would have been playing with the Graphite if Prince would have given them to us, or if we could afford them!
As Coach Rick alluded, graphite throat pieces also added a lot to construction cost – compared to just bending a single carbon composite tube into a racket shape and riveting a plastic throat piece in place – so a plastic throat piece (as already used in metal frames) was also characteristic of entry-level* graphite frames like the Precision Graphite and the Pro Kennex Bronze Ace.
* "Entry-level" as in 'entering the expensive world of composite frames,' not as in 'suitable only for beginner-level tennis.'
The Comp (later called Graphite Comp 110) did resemble a slightly stiffer Precision Graphite 110 with a graphite throat piece. It had a green and a gold pinstripe; the Precision had a blue and a gold pinstripe. Both were a little faster through the air than the Graphite 110, probably due to having a ~103 sq. in. actual head size vs the Graphite's ~108.
It was way later, in the 90s, that Prince used its trademarked name "Precision" for an entire line (like "Triple Threat") instead of for a single frame design (like "Response").