Greetings Everyone

I was in Laingsburg over the weekend, and I noticed the historical photographs of the old cantilever (Cecil & Sally) crossing signals. Looked like one overhead crossbuck w/ overhead flashers.

Were these types of signals common at the time (installed in the 30's, I think) on MC/NYC/PC? As the tracks went in 1976/77 ish, the cantilevers stood for a few more years. Does anyone know what year they were pulled? Still around somewhere?