On the RME with the green dial: Is there any chance you have a RME-70 I have had both the 69 and the 70 at verious times. I think the 70 had octal tubes, and a green dial. Could be wrong. Going by a bad memory. Reguarding the dial ; the Hallicrafter dials, were made by a photographic process . The dials after a while turn brown. Did this happen to your RME ? Phil