This one appeared in March 2009 with an asking price of $4,999. That's pretty high and didn't draw any bids, but it does come with a large number of pickups that would be hard to find on your own. Interestingly, for such a late serial number, you would otherwise expect it to have a saddle with a fret on top and textured formica pickguard.
"FOR SALE: 1969 Dan Armstrong Ampeg guitar with 6 extra pickups. 7 pickups total including 5 vintage originals and 2 Kent Armstrong's. Humbucker is Vintage. pickups included are x1 DA rock treble, x1 DA country bass, x1 DA RT, x1 DA CB, x1 DA ST, x1 KA MD, x1 KA TR. Original case and 100% original guitar. Serial #A2578D. Smooth pickguard version. EX++++ condition."