They are making new ones now you know?
There was just recently a long thread about these over at the DFO...worth reading through if these interest you. It's not really a matter of how many were made but of how many survived their duty in the NYC schools and then managed to "escape into the wild" (sold, stolen, or salvaged).
I just wish they had made them with eight lugs so they'd be more unique from the 402. The main difference being the lack of chrome plating. I guess that does make a difference in sound but an eight lug like the regular acro would have been a totally different beast.
