Hi, I have a Sigma DR-14! Made in Japan and on the label "imported and guaranteed by LEVIN Sweden, Göteborg", there is also a "M" stamped on the label. It is a 3 pieces back. It sounds fantastic! It has a solid top and I am not sure about the back and sides. Anyone can tell me more about this model and its value in case of a sell? The conditions are really great and the neck is still 100% straight with a nice action. Thanks for any suggestion. Rick