I'm going to cheat by a year and enter two 19 year old bikes...

My 54cm 753 Motorola Eddy Merckx came in at a surprisingly heavy 20.5 pounds (granted, I have not gone out of my way to make it light and that includes water bottles, lights, heavy leather saddle and silly delta brakes).

My 54cm Merlin Titanium came in at 18.8 pounds...but like the Merckx, that includes stuff like saddle bag, frame pump...etc.

The Raleigh pro, with lights, bottle, saddle bag, pump, brooks tape and pro saddle was 23.4 pounds and the three seater must go at least 60-70 pounds...but I haven't weighted it.