
For me, it was my first John Gardner novel (and the first continuation novel outside of Fleming for that matter). I got my copy used at a bookstore along with a few other Fleming paperbacks probably when I was in my early teens.
Wasn't quite sure what it was or who Gardner was, but I remember finding it very enjoyable. Having read the small preview of For Special Services at the back, I was eager to continue on. I guess I was lucky to have read almost all of the Gardner novels in order.