Kando-locomotive V40. This was the world's first mainline industry-frequency single phase electric loco. This example, the V40,016 is on display in front of the Keleti RR Station in Budapest. It cannot participate in shows or haul museum trains as it was built for 16kV catenary, but Hungary changed the voltage in 1973 for 25kV.

Photo by Janos Ero Scan by Marco van Uden