I just knew those were Nervex Pros in the pic, but didn't have the guts to say it from some pixelated pictures.

That's not just anything either; those Nervex lugs were filed beautifully and the edge lips removed from them when this frame was built. What type of BB threads? As much as I want to say "possibly French," those cable stops look like the ones that Raleigh used in bulk, and thus I'll edge towards it being a bespoke English build.

I bet it'd clean up after a molasses bath. All but that spot next to the shift lever appears to be surface.

Where's the bend in the TT?

-Kurt