Double-sided A4 flyer by British Rogers, issued by Japanese distributor ODEX around 1987, devoted entirely to the LS3/5A BBC monitor in its canonical 15-ohm guise (after 1987 Rogers switched to the 11-ohm version). Rogers is an English company from Surrey, and the LS3/5A isn’t even their design: the speaker was engineered by BBC for monitoring in the tight cabins of outside-broadcast vehicles, and Rogers were licensed to manufacture it in production. The front shows the speaker on a shelf among antique books; the back is a detailed breakdown - 10cm bextrene woofer (KEF B110, BBC LS2/7), 2cm dome tweeter KEF T27/SP1032, BBC FL6/23 crossover with a 1dB-step tapped transformer, an English oak cabinet with bitumen-lined walls, and every pair measured individually on Brüel & Kjær gear, cross-checked against the BBC reference, with the response archived per serial number.