I found a super cool bike made by Pettenella that I was considering for the L'Eroica Italy ride. But, the seller isn't sure of the year. He thinks sometime between 1984 and 1988. The frame was NOS so identification by the components won't work. I was hoping someone here could help. The only stamp on the bb is the size (55cm).

Also, what do you think a fair price for this bike would be? Pettenella was a pioneer of aero tubing and this bike has it but I don't know much more about it.