Here's one in San Diego, not for sale. The owner took photos next to a Cadillac and posts this information:
"1956 Fiat Abarth 500GT Zagato - Sorry, this one is not for sale at this time.
Thanks to help from John de Boer who maintains The Italian Car Registry and Abarth historian Wilfried Maak I have been able to find much of the history on this car.
Luigi Argenti of Bologna purchased this car from the factory on April 26, 1958 and apparently entered it the very next day in the hillclimb at San Marino and won the 500 GT class.
Prior to this, we are most certain it was the 1957 Turin Show car due to several unique features it exhibits to this day. These same features identify it as the prototype of the small run 500 GT Zagatos.
There is much more to be leaned about this rare car and I hope to do that in the future. If anyone has photos of this car in period please contact me."