Bikepedia lists the Cannondale models from 1993 to the present. Funny thing is that if you google on "Cannondale R600 on Bikepedia" it shows the bike was made in 1993, 1996, and 1997-2004 but doesn't list 1995 as a year it was produced. '93 had downtube shifters (not there) and '96 had Shimano RX-100 STI Dual Control shifters. Looks nice for a 20+ year old bike.