I've posted this on Reddit aswell, but I might just aswell post it here, so you guys can take a look aswell.
If you have the gold sitting your auction house and you don't remember what that gold's related item was, click on the chatbox without exiting the AH with your gold visible. Hold shift and click on the gold, not the name but the gold icon of the sold item and it will pop a text of the item on your chatbox. Press enter then highlight over the item's name for the stats.
Enjoy!