We go to thrift stores & yard sales a lot. My 15-year-old has a knack for instantly recognizing items that are very valuable, and she's been doing it since she was 8. She found an original drawing of a somewhat famous artist being sold away a yard sale in a box of things for $1...we resold it for $3600.
She’s found: an antique piece of serving ware–I think it was a pie slicer or cheese knife that was the rarest part of a set, rare pyrex dishes, an original Holly Hobbie doll, a jar of buttons that turned out to be all vintage designer buttons, a baggie with dozens of all original monopoly pieces, a weird mid-century lamp that we bought for $10 but resold for $1400 bc of the name which I forget and we could've gotten more if I had known what it was. But I took the first offer, subsequent offers were more than double.
It's not a matter of her getting lucky a few times because she ONLY gets stuff she will use or wear or play with immediately or stuff that can be sold for huge profits. She doesn't know anything about these things–she didn't pick up that lamp or that drawing and say "Mom this is a genuine blah blah blah, its very valuable", its always "Mom I bet you can get a lot of money for this"... that's it.
Other than resellers, is there a name for this talent or this practice?