Originally Posted by
Chombi
Not sure, but the bike could have fallen into the transition period when 120mm/5 speeds were being repalced by 126mm/6 speeds.....
My 1972 race bike with an NR drivetrain is a 5 speed with 120mm rear spacing....
My 1972 Kessels "Eddy Merckx" has 6-speed spacing. It was around back then, but uncommon on bikes made for the general public.