Unidentified models
With the exception of numbers 3, 6, 8 and 10 all of these guitars seem to pre-date the 1981 launch of Westone guitars by Matsumoku. None of them appear in any of the catalogues
Guitars
The first guitar above is probably a Matsumoku model, and seems to be a precursor of the Thunder series. Numbers 2, 5, 9 and 11 may well be Matsumoku guitars as well - the logo on the headstock is the same as on number 1, and the same as on the acoustic models which were definitely made by Matsumoku. (Thanks to Fernando Freitez for pointing this out). Numbers 7 and 8 are definitely Matsumoku guitars. Number 10 appears to be an SLM Korean guitar