This guitar came up for sale in September 2013 on Craigslist (Watervliet, MI) with an asking price of $2,200.
"This Ampeg Dan Armstrong Lucite guitar was purchased and has remained in my possession since 1968. I have kept it in great shape and it works great. This guitar is a collectors Item and other Rock-in Roll bands such as Rolling Stones and Georgia Satellites have used similar Ampeg Dan Armstrong Lucite guitars. Interested parties please call (269) 277-7903. Price is $2200 OBO."
Here's the response to an e-mail regarding the serial number.
Hi Scott, I had my Uncle Mike finally find and tell me what the serial number was and he said it was A2003 followed by an offset D. So I looked it up and apparently he bought this in 1970 not 1968 or 1969 like he thought. Anyway he had the bridge fixed and a couple of the tuning keys. He has been talking to others who are interested. Let me know if you want to go see it and we could set up an appointment for you. He lives in Watervliet, MI.