This is a Centurion Ironman Dave Scott women's road bike. It is considered a "Proportional" bike and ideal for a petite women between 4' 11" to 5' 4" depending on inseam.
Likely from around 1987.
It has a 24" front wheel, 700c rear wheel and 47cm frame.
Cro-mo Tange frame, mostly 105 components, 12 speeds and two water bottle cages.
All tuned, lubed, cleaned and ready to ride. All credit cards accepted.