50cm is from centre of bottom bracket to top of seat tube. Distance from centre of top of seat tube to centre of top of head tube— 55cm.
Shimano 600 AX Double Front Derailleur, 28.6mm Clamp On, 1980s Vintage
SunTour Perfect 5 Speed Freewheel, 14-24T, 1.37 x 24TPI, 1980s Vintage (1984)
Pair (2 X) Cinelli Handlebar Bar End Plugs, 1980s Vintage
2 X ( A Pair Of) 3TTT Handlebar Bar End Plugs, 1980s Vintage
Shimano Deore Front Triple Derailleur FD-MT60, 28.6mm Bottom Pull, 1980s Vintage