Qantas too, had great service and food at the pointy end. During the late 60's,, my new wife and I travelled 1st class to and from London. Silver service, wonderful wines and very comfortable seats on the 707 at that time.
No in flight entertainment then, but you didn't miss what you never had, and the staff made you feel quite special during the flight. Nothing was too much trouble.
Not as many people travelling in those days and everyone was well dressed, even in economy. No business class then.
Fortunate to have been given the trip as wedding present, so it was just fabulous and a great start to a long marriage.