I second the above comment. Unfortunately it is the cheap standard frame and not reynolds 531. Assuming it was a banana originally then the reynolds frame had no mudguard eyelets, rear brake cable ran down the side of the crossbar, top of the forks sloped and had no crown, headset was shimano...
here's my latest europa. Had one in the 80s and loved it as my first racer. Had a banana too but the frame snapped so all the parts are being put onto this frame instead