Nice bass, Daymian, infact it is just like my bass...you can see it in the Showcase section in the Distillate folder. Mica told me that about 300 or so of these Distillates were made ( with just one pickup and the brass plate in the front) exclusively for the Japanese market; they all had zebrawood tops mahogany body & purpleheart/maple necks & 32 inch scale. The zebrawood selected for this batch was quartesawn, so it shows more action than a typical zebrawood top. Yours is a 1981 model judging from the serial number; seems like it was number 18 of that batch. The controls are fairly simple: volume, filter, q switch, and 2 position high and low boost switches.
Valentino