It's kind of spooky to think that meteorites this large could've landed in someone's backyard and been forgotten, or worse yet, taken in and kept.
Iron space dust that is fine enough to escape incineration as “shooting stars” when entering Earth's atmosphere drifts down continuously. To collect these small iron spheres, scrape several handfuls of mud from a convenient roof gutter, preferably a plastic one, add to a bucket of water and stir.
Fish for meteorites with a strong magnet wrapped in a plastic bag. Remove the magnet, carefully rinse the bag into a glass dish and look for fine, dark grey dust. Dragging the magnet underneath will concentrate the dust. A good magnifier will show tiny spheres, some of them up to 0.2 millimetres in diameter.
If I see a rock fall from the sky in my backyard and no one comes to ask to study it, you can bet I will keep it for myself.
Tough luck if you're commuting on the wrong day.
But my favorite ICD code is V97.33XD - Sucked into jet engine, subsequent encounter.
Like that happens more than once...