You find a room that seems special, and soon spot a chest. You open it to find...

Misplaced Rings!

You take your "treasure" and completed map back to Blake. He doesn't seem interested in what you have found. You keep the Misplaced Rings, along with 50,000 sP that he pays you for your map.

Does anyone know how much I could sell these for? There aren't any in shops, nor trades.

I sold the one I got earlier for 15 mil, and the overall average price says 24 mil, so somewhere in that ball park maybe? :)

Just got an offer of 25 mil, so I accepted that. Thanks for the advice!