This Lucas label, with Red colouring, is very similar to the extremely rare Lucas SR-R label, the racing magneto fitted to DOHC Featherbed Manx in the mid 1950's, prior to the introduction of the 2MTT rotating magnet magneto. In the 2nd photograph here, is my SR-R, with the remains of its original label. I am not sure why the reproduction label has an extra area of blank metal on the left of the label, but I think this will need to be carefully removed to fit into the indent correctly. Very high quality reproduction plate in etched steel with red enamel infill