Thank you everybody! What a nice surprise.
I'm late in responding because of a death in the family. My husband's very elderly uncle passed away on Sunday, so my celebration has been delayed a bit. I did have some celebration in advance: we did just get back from Europe, and I got a lovely little bauble at Bucherer in Lucerne....
At times like this I recall Bernard Baruch's line, "Old age is 15 years older than I am." I understand this more year by year.