Although the cards are not meant for treasure hunting, sometimes we lose items, sometimes we accuse others of "stealing" our valuable treasures.
I was once asked to use the Tarot to help find an item, that potentially was stolen by someone who recently had stop by for a visit. So I did. I pulled the card and read "not stolen".
So you ask, what is the message the card is saying? Alot...lots to tell. The lost item was NOT stolen, hence the 7 of swords would have indicated that. Instead, the 6 of swords is saying that the lost item, is somewhere in a "moving transport that carries people from place to place". You might say to me, but wait, I don't own a boat! Fair enough. But how about....
The item was found inside the car, "a transport that moves people from place to place". :)