I can't seem to figure out what type of font the FDNY used to use to identify their apparatus numbers. I believe it was used from the late '70s through the late '80s. Any help would be much appreciated. Here are a few more samples.

https://s-media-cache-ak0.pinimg.com/originals/c5/86/47/c586471a44f112e605699aedc5b2b713.jpg

http://www.usfirepolice.net/ny_fdny/ny_nyc_fdny_retired_engine_260.jpg

https://i.pinimg.com/originals/47/9a/0c/479a0c1b5a3cdd4b754524bd6f7d2cb8.jpg