I got mercedes maintenance Manual for passenger cars USA-Version April 1977 edition cover's cars 220D-600 including year 1977 covers 38 cars in all.
I also have Model year 1978 Passenger cars USA version October 1977
And 1978 supplement to Maintenance Manual January 1978
All above are are in great shape as I don't used them much.
PM what you would not consider to be a fair price for all books.
The diesel book has already been sold. Want the other's gone as a set.