A rare colour image of a pre-WW2 London bus, taken from a printer's annual showing the technical process to print in colour. This is ST 127, GF 7211, the chassis built by AEC at Southall. The ST type were based on the then new AEC Regent chassis and ST 127 formed part of the second 'batch', most of which were allocated, as seen here by the garage plate R, to Hammersmith garage and operated on routes including the 11E.