Don't you just hate it when....

.....at the end of the day & you suddenly notice...

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.......that the crown has disappeared.  

The stem is there but it is a screw on crown so it must have unwound and come away.

I've been crawling around with a torch all over but no luck. I said to my wife that I had just put a new battery in so at least the time is right & she reminds me the clocks are about to go forward again.    

While it could have fallen off when I was out in the  afternoon for a short time I think I would have noticed it was missing earlier so going back to do some more carpet patting.

Rant over......