Any old Bottecchia is a decent machine at least. I have a "DeLuxe", which was their entry level machine, and it's the equal of any Peugeot UO-8 or Raleigh Grand Prix of it's era in quality, and it benefits from having an Italian pedigree.
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I have a white PX-10, a Green Dawes Galaxy and an Orange Falcon, now I'm done.