One data point: the 1967 Holdsworth Aids catalogue lists an option for Simplex handlebar control with white outer casing under its listings for Simplex Prestige gears. ................. Peter ..................................... Peter Brueggeman La Jolla California United States America pbrueggeman(AT)ucsd.edu
Anyone know when Simplex introduced their bar-end, sometimes called cyclo cross, shifters? ...Scott Davis