Series 12 Passenger Cars are used in such special trains as 'Steam Locomotive train Gumma, Minakami' or 'Steam locomotive train Gumma, Yokokawa', drawn by D51 and other steam locomotives, as well as in special trains on other lines in JR East Japan's areas.

OYA 12's are special cars modified on the basis of SUHAFU 12 belonging to the Takasaki Train Depot and used as reserve cars to accompany and move a steam locomotive, move in or out of factories or to travel to a distant area to make a special train.

To pull the trains, such locomotives are recommendable as EF64 1000s of JR East Japan, #2016-A D51, with Sublights, and #7008-G DD51 800 belonging to Takasaki Train Depot.

OHA 12/SUHAFU 12

THE SCALE MODEL IS MODELED AFTER THE RECENT SHAPE OF THE VEHICLES BELONGING TO THE TAKASAKI BRANCH OF JR EAST TAKASAKI TRAIN DEPOT. CAR NO. 100S OF OHAFU 12 LATE STAGE IS MODELED FOR THE FIRST TIME. THE APPEARANCE IS ACCURATELY REPRODUCED WITH SUCH DETAILS AS THROUGH DIAPHRAGMS ATTACHED OUTSIDE, VERTICAL CAR SIDE WINDOWS, BODY SIDES WITHOUT JR SIGN.

OYA 12

THE SCALE MODEL IS MADE AFTER THE VEHICLE WITH BLIND PULLED DOWN ON THE SIDE WINDOWS. UNLIKE SUHAFU 12, IT HAS NO ROOFTOP WIRELESS ANTENNA BUT HAS WHITE BELT ON THE FRONT THROUGH DOOR AND JR SIGN ON THE BODY SIDE. THE SIGNS ON THE MIDDLE CAR CONNECTION SIDES ARE ALSO REPRODUCED.