I would guess probably, 1950s or 1960s but I couldn't know for sure. See pics for condition details.
Vintage Märklin 2903 HO Train Set Märklin 2903 HO Passenger Train Set Boxed
Vtg Marklin Train Gebrauchsanweisung 800 Electr. Niniaturbahn Spur 00 German
Rare HO Scale 3-Rail Marklin Freight Train Set - Tested Working
MARKLIN HO SCALE STARTER TRAIN SET W/STEAM LOCOMOTIVE & WAGONS &TRACK SET S 2930
MARKLIN HO 3-rail Continental Outline 2953 Passenger Train Set - Tested Working
Vintage Boxed Marklin Model Train Box Set 3200 HO Gauge, Loco, Wagons, Untested
