The ones with the serrated upper edge were 50's, and the plain ones are from about 59/60ish onwards - which looks about right on that Witcomb. Early '60's would be my guess
@Rik_Van_Looy started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
The ones with the serrated upper edge were 50's, and the plain ones are from about 59/60ish onwards - which looks about right on that Witcomb.
Early '60's would be my guess