Needs a full rebuild, note the probable lack of chain tension, (upper sag) and it is in the middle of the range, my guess the rear mech has a clotted up jockey spring or it is tired out, parts will be hopeless to find but easy to exchange. Tubulars, good, but check rims for dents and trueness, brake levers and bars are wonky in adjustment.
if it fit could be a redeeming project but no goldmine.