It's mine and the last time I saw it was about twenty years ago when we put the pond we're now taking out in place. I had no idea at the time what had happened to it but somehow it had ended up under a couple of big and very heavy rocks.
That it's turned up is actually fortuitous because when I was in hospital the last time they somehow lost my current bracelet and I haven't got around to ordering a replacement. I have a fancier one but it is easy to scratch so I don't like to wear it all the time and only put it on when I go out.
Weird, hey. Not as weird, though, as the multiple bells of a brass wind chime which turned up over a period of months not long after we moved in and the other strange bits and pieces over the years that have come from who knows where.
While we have no idea what's brought all these oddments to us I have a theory and it's quite obvious really. We're sitting on a portal into another dimension and things come and go through it. It explains the on-going mystery of the missing sock out of what I'd swear were part of a pair when I put them in the wash as well, doesn't it. What other explanation could there be?