Originally Posted by
T-Mar
While the serial number is in the gray region where it could be either a 1986 or 1987 model, the graphics indcate a 1987 Centurion Ironman Expert. This is corroborated by the presence of a Shimano New 105 headset, which was introduced for the 1987 model year.
Good eye! Indeed it is a new 105 headset and I'm sure it's original. Could the group possibly have been available to Centurion in '86? Guess what's more likely is the frame was produced late in the year and wasn' t built up till the next. (?)