This 1970 example came on the market in August 2016 with an asking price of $1,900. Possible changed switch, otherwise fairly intact condition.
Dan Armstrong Vintage Ampeg Electric Guitar - Late 1969/Early 1970 All Original. Serial Number - A1133D w/ Rock Treble Pickup. Will ship with generic semi-hard case in fair condition. Weighs a bit over 9lbs - width at nut aprox. 1-3/4".