As Maserati works to rebuild itself, it’s important to remember the things that made this Italian automaker great. Things like this Zagato-bodied 1955 Maserati A6G/54 2000 Spyder, which is heading to auction with RM Sotheby’s which is hosting a sale on August 19 coinciding with Monterey Car Week.The A6G/54 was the final iteration of a model that…