Ya. I’ve had a hard time finding any like mine for sale. I was wondering how I could find the market value.
Well my memory has been corrected so it is the expected marking for at least a brief period.
As for value I'd start looking at values of Guild D-40's, regardless of age or factory. I'd then consider the instruments in very similar cosmetic condition to be comparable. If there was a lot of variation in price I'd probably drop the older ones since some 30 year old instruments are prized because they have opened up and mellowed and others are discounted because of the fear (real or imagined) that they need a neck reset. I would then remember that we are really finding an expected value but actual sale prices may be a couple hundred, more or less. When I say I expect the price of something to be $1,000 what I really mean is I would consider $750 or less a screaming bargain and $1,250 or more high and possibly realistically so.
If I did this right the following is current used listings on Reverb
and this is Sold listings
Note that you have new instruments that you need may want to filter out and the Sold listings are the last asking price which may not be the actual sale price. looking at the above for about 30 seconds maybe $1,400?