I am seeking technical information on an 80's Korean made Sigma CR-7 classical. I will appreciate infomation anyone might have from an old brochure, such as top material, neck, etc. It is a Rosewood back and sides, laminate I presume, and Internet sources suggest the dates of manufacture of the CR-7 to be from 1979-1985. I assume this one was made 1984-1985,as it is Korean.

Thanks for any info you may have.