I created a thread a few years ago for my Superbe entitled “1981? Raleigh Superbe” (sorry I didn’t know how to link it) I posted quite a few pics of the Reynolds stickers and lugwork, as well as the serial #. Others posted pics of their bikes as well. On my bike, the defining factor on tubing is that every main frame tube, as well as the fork blades, are stamped with “Reynolds Butted”. It is very faint and hard to see even with the cromovelato, so if yours has been painted, they may not be visible, but it’s worth a check. On mine, the stamps are near the ends of each tube, but that could be random. Good luck!