Hi, that looks like an early number 1 lug Ephgrave ( needs researching to be 100% ), if so, that frame is top of any collectors list of desireable frames and very valueable ( I maybe able to afford one, one day ). If I was lucky enough to be in your shoes , I would ditch the Colnago forks and try to get a period fork, get a proper repaint, and enjoy something that is very special. Terry