How can I recover the item that was sold?

[Bazgeron]

Greetings! I only recently started to explore how everything works but I knew I'd need to understand how to do this one day.
I can find specific player, I can find the item's ID and Item Serial, but I am not sure how to get back, or even better - to give it to myself to be sure that I picked out a correct item first.

So... Is anyone here knows how to recover the item with this information? What sort of command should I do inside the game or maybe I should do it outside the game? Help if you can, please ,_,

[MentaL]