Frederico Garcia acoustical classical (1970) Sell or get value

by Joe P.
(Washington dc)

Frederico Garcia grade # 3 manufacture date Nov. 1970
The sound board is of Spanish pine (Spain) The neck and
sides are o walnut (India) The fingerboard(Granadillo)
The neck (Cedar) are both from Africa The rosette
(inlaid wood marquetry) is persia. The final assembly
of all parts and finishing is Japan. It is from Antigua
Casa.brenar.ltd of Madrid. This guitar is in excellent condition, not a mark on it,and has been in its case
since I have owned it. Looking to sell or get a value on this instrument.