Here is a note from Wagner to Otto Wesendonk on 16 March 1854:
Homer crept out of my library.
I asked: where are you going?
He said: to congratulate Otto Wesendonk on his birthday.
I answered: congratulate from me as well!
Richard W.
The guests thought ninety was a grand age to be; the birthday girl decided 60 was better and turned the 9 upside down.