This is not too "old" transmission - it is mounted on the Type 601 (TN/T1-series), model 209 D, equipped with OM617 engine.
It has a 270 mm torque convertor, vacuum modulator as on 722-series gearboxes, K1 clutch the same as on the 722.111-113/120/122, K2 clutch - as on the 722.120/122.