hi i have had around 7 sigmas and still own two ,one is a 12 string with i believe all solid woods flamed back and sides that is excellant and also a d28h this has the paper label and the brace stamped made in japan for cf martin and the serial number is 021581 im 99 % sure its all solid and its incredible i paid very little for it with hard case 2 pickups and 70s gibsn capo its out of this world any help on this would be great is it a 70s or 80s model ??
thanks graeme