I believe  with  all  the  research   I have  done.  This is a 1960s Typoon model.  I ran the serial  #but it came  no documentation  found. I had purchased  this in music  store  in1976 just  like  this  with original  case. From  what I see the Typhoon  Model  is the three  picups and two volumes.  The electronics  work . I had unplugged  it from the pocket Amp with headphones.  I have always  enjoyed  this guitar  for this. Still has good  sound  and good  action.  Holds tune. Has your normal  ware 60 years. One knob missing  and the nut cover  at the  top of neck. Case , the bottom  hinge has released  but all locks down good. I have seen just the case for this guitar  sell for a good price you do not see a lot of these.