I wasn't the one who lost them, but...
Last house we bought (in the bay area), we were looking it over with our RE agent, hadn't made a bid on it, walked in the back uard, looked down in the dirt - and there's a pretty rare Ford Script adjustable wrench from the "T" era (ford script plus manufacturers info on it, not a code like normal). Bought the house, derusted the wrench, and it hung above mybench until we moved. Still hands on the wall in the new shop...
Time passes. Bought the new place a few years ago, realize a few months back I need to regrease the front hubs on the '15 T. Go to look for my Hubcap/wheel bearing wrench (pretty specialized item, damned hard to get the hubcaps off without one and not fubar them up), have NO idea where the hell mine went... anyway, stopped looking a couple days later when the well driller wanted me to mark where we wanted the new hole punched, walked over to the site, scraped back some pine needles and bent over to piant a big "X" on the ground... and saw some rusty metal in a strangely familiar shape. It was a little bent but straightenable, the hubcap side was in surprisingly good shape... in fact, once it was cleaned up and painted, it looked almost new.
3 weeks later, I'm looking thru a box I hadn't unpacked... there's my hubcap wrench.
I figure that's how the really good places we've bought are picked - they're all resting places for antique car tools that were lost some time in the far past...