There are many factors to consider to properly assess the value of a rare, vintage instrument. How old is it, is it all original, total number produced, condition, what's the market for these instruments now? The best way to start off is by sending us pictures documenting any damage or modifications, unique features, etc... In the email please state as much as you know about the instrument and a serial number. We will let you know what we can do for you. We do not estimate guitars value so you can sell them on ebay or to your friends. We will let you know what we can offer you in cash or what we can get you on consignment and it's trade in value towards a specific guitar. We offer a written insurance appraisal service for 45.00. Send any inquires to sales@guitarhangar.com.