Seven three-car DMUs built by Esslingen-Ferrostaal in 1958/1959.
According the info I have gathered from the net, they were operational till the early 90s.
Let's wait for the ''experts'' to give us the rest
Narrow DMU-3 with Railcar 6002 (Esslingen) at Pireas Station. Photo: Artemis Klonos, from http://www.railfaneurope.net
Βφπτ0025, maybe the only trailer surviving today (?) at Kalamata station, 8/5/2004
