Ever "found" valuable vintage furniture?

We saw a the noguchi coffee table at an antique store in stillwater mn for 500 once, I figured they didn’t know what it was because the label said “biomorphic coffee table” and I imagined even 500 was too cheap for it if it was indeed real. Later I checked ebay only to see hundreds of knock offs for about that price.

sometimes I think even as a knock off it is a very nice table