Dave:
   
    In 2004, when I first opened my store, every guitar trader within 150 miles came by to "get the inside track" on old guitars. By and large, they expected you to really take advantage of peoples' ignorance, re-sale it for a nice profit to a guitar trader, who would hope to sell it into an over-hyped market for a bigger profit.
    Every day, I send someone to Elderly Instruments (ext #3 is their appraisial department) to get an unbiased opinion of value.
    I would check Elderly's vintage website every day.
Wilco48