The Merc Seller advert has a pic of the rear seat..
Good spot. Also has the chassis number in one of the pictures..
Dealer Great Britain (537)
Interior leather black / anthracite (271)
Paint
481 bornite (blackberry) metallic (с 01.01.1990 по 31.12.1996)
Options
240 outside temperature indicator (с 01.03.1982)
241 left front seat electrically adjustable
242 right front seat electrically adjustable
244 sports seats, front (с 01.07.1986)
249 automatically dipping inside rear view mirror (с 01.06.1990)
281 steering wheel with sports design (390 mm dia.) and gearshift lever in leather trim (с 01.05.1990)
291 airbag for front passenger
300 storage box in front tray (с 01.05.1988)
341 additional lamp (с 01.09.1982)
362 RHD vehicles as per EC regulations
412 electric sliding roof with tilting device (с 01.07.1983)
425 5-speed automatic transmission (с 01.02.1988)
430 headrests in the rear (с 01.01.1977)
441 steering column, electrically adjustable
461 instrument with mileage reading and english lettering (с 01.04.1990)
471 acceleration skid control (ASR) (с 01.07.1984)
524 paintcoat preservation (с 01.01.1964)
543 sun visor with vanity mirror, illuminated, left and right (с 01.11.1978)
551 anti-theft warning system (с 01.11.1978 по 31.03.1998)
570 folding armrest front
588 automatic climate control and electric window lifters (front and rear doors) (с 01.01.1977)
593 heat-insulating glass, all-around, heated rear window pane (single-sheet safety glass), band filter
green heat-insulating glass all round, heated rear window, single pane safety glass - tinted strip (с 01.01.1972)
600 headlamp wiper/washer (с 01.08.1971)
615 lamp unit, asymmetrical l.h. traffic, and front and rear door courtesy lamps
like 610, and with type 107 bifocal bulbs
611 + 613 (с 01.11.1978)
620 emission control system
vehicles with catalyst technique (с 01.03.1985)
653 sports chassis with 8-hole light alloy rims (с 01.01.1990)
668 packing for transport
731 wood trim, burred walnut root (с 01.08.1980)
833
866 Technical changes of modelling year 1995 (с 01.01.1994 по 19.10.1997)
880 closing system with infrared remote control (с 01.02.1988)
915 fuel tank, 70 liter (с 01.05.1988)
953 sportline with 8-hole rim (consisting of codes 65/3, 244, 281) (с 01.02.1991 по 30.09.1996)