-SG- I have seen odd mentions in Norton letters and literature about the undesirable use of parts not of Norton origin. One of the suppliers - I think providing parts for other makes as well - was J Hemmings and Sons of Liverpool and Ian has kindly lent us a copy of the 1931 price list, of which scans are attached. Worth noting the text against #HN1037 re the bronze caged OHV rocker bearings ... Thanks for the loan, Ian!