I once had a situation where my wife's aunt found a large number of cards in an apartment that she was renting out. The renter had split and left them after he failed to pay the rent. So, knowing that I was a big collector, she asked that I take a look at them the next time that I was over at her house.
Well, unfortunately, it was a huge carton filled with 80's and 90's cards

. Have any of you non-dealers had a similar situation where you struck gold? I hope that one day I will be as lucky.