Incredibly rare / unique Yamaha factory tour slides, cassette and booklet of the script showing how the company made their guitars many years ago. This set is around the GC-30A model which was launched in the early 1970s, so it probably originates from around this period (I have owned it since the 1980s). I've never seen another set come up for sale, they were not on general release for sale.

79 slides all present and correct and the cassette plays absolutely fine.

This is from the private stock of Yamaha MSG designer Martyn Booth.

Please see my other items, lots of guitar parts and more to follow.