I have a friend with a Spanish made Goya acoustic and he isn't sure how old it is. There is a site that dates the Swedish made ones but this is a Spanish one and there is no info on the site regarding these.

Any help would be much appreciated. A guy in a guitar shop said to him it would be about 30-40 years old, which would place it in the same age bracket as the Goyas made by Hagstrom, which seems odd for a start.

Thanks to anyone who can help