Nervex Pro Lugs and BB, round forks, Ekla ‘D’ pattern cast fork crown drilled for front brake, curved unreinforced drilled brake stay bridge. Not a full wrapover seatstay.
I can’t remember where I got all the photos but this frame was on Ebay and I wondered about it then in Rourke livery. I believe it is now London based and with a LFGSS member who stripped to bare metal. For whoever it is out there, look after it as it is one of the ten earliest still known to exist!