SZ 00001 is legit, in the same Italian family for 40 years and they sold their Sprint Veloce 1st series 04687 a long time ago to a Swiss friend of mine who owns the red 2000 Sportiva. The nose was changed after an accident a long time ago... This car is important not only because it is the 1st SZ, but also because it was purchased by the Scuderia Sant'Ambroeus and won the first victory for an SZ at the Naples GT 1300cc grand prix, a week after the Targa Florio, driven by Sergio Pedretti "Kim". In the photo SS "Muso Basso" 00045 of Vincenzo Riolo the 1300cc TF class winner at Naples behind Kim and SZ 00001. Note the small side air intakes with only 2 horizontal bars that SZ 00002 also had. SZ 00001 also has its original SVZ style seats you can see on the sales advert, albeit the original interior was not black but probably grey from my 1960 Geneva motor show photos.Interesting. If the car is legit, though, I'm surprised the auction isn't being handled by an organization like Bonhams.