
Their web site is For appraisal of vintage instruments or historical information you may wish to contact the Shrine to Music Museum at The University of South Dakota in Vermillion. There is a Blue Book for Musical Instruments Published by Orion Research that is available to determine the value of many used instruments on the market today. Individuals reselling used instruments should be responsible for supplying details of the original purchase ie: warranty registration documents or sales receipt information which would confirm the model and serial number of the instrument and the date it was originally purchased. It can take a considerable amount of time to locate a particular serial number if we do not have any idea of the model or when it was originally sold.

These series of numbers have not been maintained in separate lists but are recorded together in our sales records that begin in 1964. Each one of these lines has numerous models of instruments and unfortunately in some cases each model has its own series of serial numbers.
