Tony Koorlander (Precinct Electronics owner and designer)
Wow... that Smooth is one that I actually remember building. Making the barrier for the transformer for safety. I only made 3 or 4 like that and they had the best sound when they had 24 volts from the power supply...some had 18...but they were still better than the battery powered ones.
You have a very special and rare one there! Look after it. I can still service these pedals ...but they shouldn't go wrong. The first one that I built is still being used today. I replaced the footswitch for the owner last year.
Fascinating to know they are still being used..as well as all the Bell Electrolabs stuff too.