This ticket machine was a common sight for most Dubliners
Buses were manned by the two-man bus crew of driver and conductor. When Dublin Bus was born in 1987 it was the beginning of the end for bus conductors and their ticket machines. While most conductors were retrained as drivers, a few stayed on, with one conductor still serving the 20b route as late as 2005.
With thanks to Dublin Bus
Watch footage of buses in 1980’s Dublin: