It was because he wanted the book stamped by a Morgan dealer Steve, but never again.
Em
It seems to be a common want but I've sold many cars and almost always an in depth history file showing all the work I've done with copies of parts invoices means much more to a prospective buyer than a stamp. I also always make notes in the service book, sometimes even photos. When it comes to a p/X at a dealer even they accept it without issue.