I was there multiple times over the last 4-5 decades,
sure it is impressive how the store went from a mom&pop shop to one of the biggest stores worldwide in a village with less than 200 inhabitants
meanwhile I prefer smaller independant stores...
History or CoolZ ?
both probably had Gotoh pickups
here is a link to a site ( made by Frankie B. who's a MiJ Fanboy like me ) with catalogs, maybe there is detailed info
https://vintagejapanguitars.com/history-guitar-catalogues/
https://vintagejapanguitars.com/cool-z-guitar-catalogues/