06/08/2023
The original mainspring broke in this Hamilton model 992. It was 106 years old and was replaced by a white alloy "unbreakable" mainspring. The watch itself looks like it was seldom (if ever) used, and was likely never worked on, yet it still looks brand new and started running after half a turn of the crown.
A thing of beauty!
Now, let's all step into a time machine and go 106 years into the future; will there be anything similar built today, that will still be running and look brand new? Very doubtful.