This heavily modified Dan Armstrong bass came up for auction in August 2015 and sold for $670. We were able to confirm via e-mail that the serial number is D605A, which places it earlier in the production run, perhaps 1969. Replaced electronics, pickguard, tuner, bridge, and truss rod cover.
"Stunning gold ascended bass. Great shape.
Played with care.
No returns price is too low."