This is a follow up to an earlier post: viewtopic.php?f=12&t=262628
I've been trying to identify a frame without 100% success so far. The frame resembles a Holdsworth, but I'm not sure. I bought the frame second hand in the late 1970s. It's geometry resembles a Holdsworth Mistral, has wrap over seat stays, Campagnolo dropouts and chromed fork and stay ends - but many frames seem to match this description. It has matching frame numbers (33156) and a second number (126) on both the bottom bracket and the forks. A few questions:
If it is a Holdsworth, what year would the number 33156 refer to?
If it is a Holdsworth brand, would Claude Butler, Freddie Grubbs etc have similar frame numbers, or would theirs follow a different pattern?
Which other frame manufacturers of a similar age used similar frame numbers, ie 5 digit, with no prefix or suffix?
What is the relevance of the second number? I've seen references to batch numbers, casting numbers or maker numbers.
Any help would be appreciated to try and narrow the search.