Any of these any good? From
www.motorbooks.co.uk
Mercedes-Benz Diesel W123 1980-1988
ISBN : 0 907779 786 Russek
Mercedes W123 1976 - 1986
ISBN : 0 620 164433 Technibooks
Mercedes-Benz W123 Diesel 200, 240 & 300
ISBN : 1 85010 1140 Haynes
Mercedes-Benz 250 & 280 W123 1976-84
ISBN : 0 85696 6770 Haynes
Mercedes-Benz W123 200 & 230 E/CE/TE
ISBN : 0 907779 611 Russek