1986 frame, since no "Master" or "Expert" designation.
That's the proper group, although the wheels could be either the copper-colored Araya A20 "rounded" or the Wolbers it appears to have, which were standard in 1987.
Bars were Nitto B115 that year, swapped out for the Modolo Speedy.
Stem was a standard Nitto, swapped out for that 3TTT.
Brake levers early in '86 were Dia Compe drilled, with "leader" cables under the wrap. Hoods were Dia Compe, and red. Later in 1986, I think they switched to 600 levers as shown. Wrap was white, as far as I know, but a lot of that was up to shops.
Seat post was a fluted SR, and saddle was a Turbo. Those have been changed.
No big deal, I'd take it apart, clean and lube it, touch up the frame, repack everything with bearings, and ride it. Get a 7-sp freewheel for a pittance, drop on some 7 or 8-sp STI shifters and don't look back.
Good job on getting a good bike.
Use both sides of the towel.
1985 Raleigh Racing USA - Competition (honoring cehowardGS)
1988 Centurion Dave Scott Ironman Master
1989 Centurion Dave Scott Ironman Expert
1989 Centurion Carbon R