Valve guides, Norton ES2 OHV cast iron (pr)

Valve guide set, cast iron, suit Norton OHV Model 18 and ES2 engine 1931 - 1954 with cast iron head. Can be used on alloy head  1955 to 1958?, (pair), 3/8 in bore. 1958+ used similar shape but bronze guide. Not for AMC motors with smaller valve stem. Exhaust valve guide for OHC models. Type G269. Overall length: 2.177 in, 55.30mm; Outside diameter: 0.6265in, 15.92mm; Flange diameter: 0.7515, 19.09mm; bore: 3/8 0.3675 in, 9.34mm
Original part numbers:
9119; A3/140; E1478 - valve guide (inlet or exhaust)