Old 05-01-16, 06:55 AM
  #3  
T-Mar
Senior Member
 
Join Date: Nov 2004
Posts: 23,233
Mentioned: 652 Post(s)
Tagged: 1 Thread(s)
Quoted: 4719 Post(s)
Likes: 0
Liked 3,034 Times in 1,874 Posts
Shimano New 105, if OEM, places it 1987-1989. It appears to be the 6 speed version, which would narrow it down to 1987-1988. During this era, New 105 bicycles were typically considered lower mid-range. This bicycle does have the full New 105 group so it may have been upgraded but the graphics are correct for this period.

The Benotto model with new 105 was the model 1800. It used a Columbus SL frame. To verify this remove the seat post and check the size stamped on it, which would be 27.2 for Columbus SL. Also, remove the front wheel and check inside the bottom of the fork's steerer tube for five spiral ridges (see photo) that are indicative of the steerer used on Columbus SL.
Attached Images
File Type: jpg
Columbus steerer.jpg (48.1 KB, 51 views)
T-Mar is offline