Pathfinder Collector Coin: "Korvosan Crown" [RPG]

 I love this simple but effective prop, and have used it to great effect in my Curse of the Crimson Throne campaign.  On one side is Queen Ileosa and the in-game date the crown would have been coined (the AP starts in  4708 A.R.), while the back side is the crown itself.  Without spoilers, this is a really handy prop to have during the AP for multiple reasons.  The coin comes in a little plastic box with a card that also avoids spoilers while giving a little flavour expectation for why it exists.  Along with the Sihedron Medallion, props like this are great to make a campaign come alive.