Issei Noro

Yamaha Issei Noro Signature guitar can be seen on the left here according to this blog post from Yamaha

In 1983, Yamaha had manufactured a Guitar specifically for Issei Noro, known as the Yamaha SG-IN (of course, I.N. are his initials.)

The guitar can be seen in the whole video. It became Issei Noros Signature guitar since the mid of the eighties. In the late eighties the guitar was added with a single coil and was available as "Yamaha SG-I" on the Japanese market.

Picture Source:

http://gakki.gaku-ya.jp/shopdetail/000000009532/

Issei Noro has been known to use the Yamaha DG-1000 for many years. It is visible behind him from the beginning of this source video.