Campagnolo Crankset for 7/8 Speed. Bottom Bracket: square taper. Date Code: [51] on both arms - 1989?
CAMPAGNOLO CHORUS 172.5mm Crankset Double Record Road C Bike 53/39T [51] 1989?
5 visible arms - (not hidden)
laser etched -
172.5 - matched arms date code [51]
Rings. AS 53 x AS 39
Guessing Chorus /CDA. however could be a Record Variation
Crankset needs to be cleaned and polished - appears worn not crashed - pedal threads are good