Many thanks for the reply, much appreciated.
The seat post is a Reynolds dome top hindiminimmmum (sorry I always spell it incorrectly), I've just polished it up hence it's shiny (must be a phase I'm going through
), I measured it at approx 27mm.
The existing rear brake bridge is hollow and straight. Although (the one originally above it) the centre pull one, that I cut / ground off looked forged/moulded? It was solid and had a bit of shape to it. Unfortuanatley I don't have any photos.
You can see where the I'm assuming 3 speed gear lever boss (on the top tube) was removed, in one of the 1st photos on the link in my sig. It was oblong with an additional raised section on it, with a threaded hole to screw something into it. The cable guides for, I again assume, the 3 speed SA hub on the seat stays were cylindrical and quite chunky!
The bottom of the rear drop outs are smooth and profiled, I don't think any gear hangers have been cut off, certainly not by me.
There seemed to many gearing braze on options, so I thought maybe some had been added when it was refinished without its transfers?
I've been told that there used to be a frame builder on each street corner an hence I was unlikely to be able to put a name to it. Just thought the upside down numbers on the steerer tube might help, an maybe top tube shifter might confirm it as more likely '50s and not '60s???
Once again thanks for the reply.
*2008 Rock Lobster Team Tig SL, MTB.
*1956 Raleigh Superbe 3 Speed
*Mid '80s Dave Hinde SL Lo-Pro/TT.
*Mid '90s Menet SPRL "team bike" Neuron 7410 DA.
And a few project bikes.