The Rep

I am 67 years young and have decided to give the bass guitar a try, so I have bought one on ebay and I have very little info. It is a Gould, the fret board is 25 inches and has 24 frets. I have included some pictures, can anyone tell me the model? It has three controls, the top part of the centre double control is missing, can I get this anywhere? and any technical info would be good. One of the pickups has active writen on it. Cheers The Rep