Bob Jackson 56cm C-T Seat tube, 54cm C-C Top tube, 100/125 Campagnolo drop out spacings. Bottom bracket 118mm runs smooth, had been used with a 2nd generation TA double crankset & not suitable for ISO Campagnolo. Takes a 27.2mm Seat post. No frame material ID, most likely Reynolds 531DB. Frame has had a later quality re spray with lug lining generally good, barbers pole lining is ok but not great, chrome is very good. Campagnolo NR headset is excellent. Generally the paint is excellent & shiny, however with the odd mark here & there, principally around the upper stays. No dents. Takes nut fixing brake calipers. Good clearance for mudguards & 700c wheels.