Circuit Drawings, Parts List And Full Instructions On How To Build Your D5B One Valver, Together With Explanatory Notes -

Douglas Electronic Industries Ltd. Paperback. Very Good. Undated paperback pamphlet, c. 1950s, in the original publisher’s printed envelop. In overall very good used condition with only minor signs of age, handling and storage - envelop rubbed and opened, with franked stamps (dated 1956) and hand-written address to front. No annotation or inscriptions and the instructions appear unused, also includes a separate parts list and a flyer from Ocean Radio, Lutterworth, offering a build service; text and diagrams bright and clear throughout. Photographs available. Not an old library book.