Rare fretless bass, came up for sale on the Kijiji web site in June 2015. Owner is located in Quebec and asking US$2,300. Lots of good commentary in the listing below, except that the D2218A serial number likely dates this as a 1971 instrument.
"Dan Armstrong Fretless bass 1969 - RARE COLLECTORS Mint condition...Owner over last 35yrs tended to by La Lutherie of Uzeb fame in perfect working order...smooth fast neck, you will not find another GUARANTEED! Yes very playable, absolutely straight neck, No scratches, No dings, only slightly discolored on back of neck from age wear use..you dont mess with that...it's the real thing. All original parts are included, including case. Badass bridge was installed for playability. 514-781-2554 cell YES will SWAP TRADE for 5 string bass."