605 might have still been running in the early 70's...sister 609 got the new red & yellow paint scheme after some shop work and spent some time on the mixed local between GC & Zacapa after that job finally went to diesel in 1975.
Krupp built Mike 166 and Baldwin built Mike 179 were both already out of service when I made my first trip there in late 1971.
All kaput now, but still a place of considerable activity into the mid 70's.