though I have never played one but like many Japanese guitars from that time period they are great copies of the same day Martins for the lower price point.
http://www.oldguitar.jp/catalog/kisosuzuki.htm
hope this helps you decide.ship
Oh and I am doubting the hundred made often they would have runs of around 300-500 from what I have been told before when it comes to some of these makers but anything is possible and value wise would be between $375.00 up to a high of $500.00 and a bit more if he has the original case also. almsot 1/3 the price of the guitars