I am new here but am a long time Guild enthusiast. I Recently picked up a Guild MkVI classical. The serial # dates it to 1970 and is Brazilian Rosewood. I could find very little information as to the approximate value and demand for this model. Can anyone here enlighten me. It is in excellent condition with only two lacquer cracks on the back.Neck angle and action are perfect. Thanks in advance and thanks for allowing me to join your group.