BONANZA PROFESSIONAL - Switzerland 1974 - road bike

list number	391
frame number	6653 seat tube
frame/fork	Colner (?), Columbus
crank/sprocket/chain	Ofmega/Shimano 5/?
derailleur (rear/front)	Crane/Dura Ace
wheels (hub/rim/tire)	Dura Ace/Mavic/Hutchinson
brakes/levers	Dura Ace/Dura Ace
bar/stem	3ttt Mod. GP 38cc/3ttt 90cc
saddle/post	Arius Special/SR Custom
paint/chrome/decals	Royal blue/lugs+crown+ends/Bonanza
plus	Interview with founder E. Grieshaber
geometry	ST 54cc (55.5ct), TT 55cm c-c, 10.1kg
rating	2.50