Sterling Webb - I just discovered you after hours of searching on the web for info on old Sigmas. I am going to be looking at a 52SCS-4 Sigma tomorrow. From what you've already posted, it sounds like this is part of the 52S series made 1979-81 in Japan, "entirely from some very strange laminates". Can you clarify? Should I assume the "CS" stands for a classical guitar made of sapele wood? From what you've written it sounds like it should be a good deal - the seller is asking $125. Any help you or anyone out there can offer would be greatly appreciated!