Doug

In case still some problems loading '63 catalogue of Challenge I'll attach a copy. Also found a good example of a Challenge model on Flickr: https://www.flickr.com/photos/oldspo...h/15244850798/

Juvela, good point re position of oiler. Even without the serial, with the 2 facts that in Holdsworth production the oiler seems to change from top of BB to bottom round about '64 and that Holdsworthy only started using Prugnat lugs in 1963 narrows this frame to '63 or '64.

The added evidence that Holdsworthy for some reason abandoned CB previous date coded serials (From VCC and the Lightweights Cycle Catalogues Vol l) and restarted simple sequential numbers early 60's (lasting only for several years) again points to this frame being a 1963. I have seen other CB's with similar low serials claiming to be 1963. Numbers in early 60's are confusing.


Doug