Complete Genuine BMW 1978 E23 733i Paper Workshop, Repair, Service Manual in BMW Binder
This OE BMW repair manual is in very nice condition, with a few smudged finger prints.
The binder, labels and all internal pages are in excellent condition with no damage or loose pages seen.
The date of 12.77 is on the bottom of every page so I assume that is the publication date so this would be applicable to the 1978 model, and most likely to the majority of the later models, except for the few changes that may have been applied.