If the seat post is 27.2 it will be Reynolds 531DB tubing, whatever that proves.
it is a bob jackson. it looks like other bob jacksons, but more importantly, hilary stone says it's a bob jackson and i bought it from him. i tend to trust hilary's judgement because he's the bona fide marque enthusiast for most british framebuilders, has a long history in the industry, and i've been round his house.[/QUOTE]
If the seat post is 27.2 it will be Reynolds 531DB tubing, whatever that proves.