Hello. I collect code & cypher systems, preferring mechanical cypher gear. For several years I exhibited in B Block at Bletchley Park. Currently I am a volunteer at The National Museum Of Computing, next door to BP' where The Colossus is operated daily. Recently I drove into Germany to buy a Signalbuch. Though I have briefly had one in my hands, I never expected to own one. This one is s
Forum: Technology and Operations