My Colian weighs in at something like 22 lbs with a modern 10 speed Campy group. I'm sure with lighter wheels, tires, and a group that used more CF / Ti I could make it lighter, but it feels pretty dang light as it is.
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1964 JRJ (Bob Jackson), 1973 Wes Mason, 1974 Raleigh Gran Sport, 1986 Schwinn High Sierra, 2000ish Colian (Colin Laing), 2011 Dick Chafe, 2013 Velo Orange Pass Hunter