Let's have some data...
there were three bathes according to Nondas:
1989, built by VEB Waggonbau Niesky, East Germany, numbers 31 73 534 100-119 (20 wagons)
1990, built by Hellenic Shipyards, numbers 31 73 534 120-219 (100 wagons)
2001, built by Hellenic Shipyards, numbers 31 73 534 220-329 (110 wagons)
31 73 534 1 116-6 Eaos-x at Agios Ioannis 07/12/2017