To be really authentic, you’d need to play what your typical mid-‘60’s mod bassist would have been playing, which would have been.......let me think.........um.......a Hofner (or Vox / Watkins etc) Ric semis would have more been the preserve of affluent emerging West coast psychedelia bands in the US, and you don’t want to be associated with that malarkey........
Seriously; what a star your son is for getting involved with this. Can’t wait to see the beastie fully restored.