Interesting point of view from a Dodgers blog. The 50th in question is Dodger Stadium not the Mets.
With the announcement of several Bobblehead dolls issued this year commemorating the 50 years of Dodger Stadium, I have to believe that Piazza was approached with the idea and he turned it down. Sadly, I almost believe that Mike is still holding a grudge against the organization and the fans all these years later. It is no secret that Piazza was not happy with being booed by Dodger fans early in ’98 when contract talks broke down.