With regards to Suzuki Three S guitars made in the 70's by Kiso Suzuki there is this post I found on guitarsite.

http://www.guitarsite.com/database/Tuition/rec/4149/wwwboard/messages/288.shtml

Or this one for Suzuki guitars which is presumably the sold off section of the original violin company.

http://www.suzukimusic.co.uk/GUITAR/acoustic-guitars.htm

Regards

CC