Found this one on a Craigs List ad in Dearborn Heights, MI. Asking price was $1,600.
"Here is a vintage 1969 Dan Armstrong clear lucite bass from Ampeg w/ original hard case. I bought it used over 10 years ago and played it minimally (mainly at home only). It has been stored in the case for at least 6 years, untouched until I removed it to take these photos."
"Cosmetically it looks good, see photos. Minor surface scratches and small dings + play wear are visible. Appears to be all original hardware, pickup, knobs, etc. Could definitely use new strings, but it works fine when I plugged it in to test it out. Definitely a nice looking vintage bass!"
"The hard case shows some wear (see photos), all latches lock into place. In good shape!
Includes two extra varying sized bridge insert pieces. Serial # D996A."