1971 Dan Armstrong offered for sale on Ebay in February 2014 with an opening price of $1,500, and finally sold for $1,325 after a few successive auctions. Here's what the seller had to say...
"1971 Dan Amrstrong serial number A2714D. This was bought new by a good friend of mine in 1971 and used for many years on stage. It's well played and shows it. It may have been re-fretted at some point because it has plenty of fret left. Plays great. Sounds great. Has the CB pickup (Country Bass). He did not like the wood grain pick guard so he made a red Plexiglas pick guard for it. Definitely looks better although it doesn't do much for the collect-ability of the guitar. Despite that everything is original. Unfortunately the tone switch toggle has broken off. It comes in a new looking G&G Fender case. Fits it perfect."