I didn't find topic like this so I made it...

Like the topic says: Name your rarest system and game.
And please post pics, I'll take picture when I get my camera back.

Soo,..
I think that my rarest system is Famicom Disk System even I don't have wires or box.. But it is still my treasure ^.^

Maybe my rarest game is Quartet for SMS | Scarcity 5 by DP Online Rarity Guide.

There you go, Post pics you guys.. ^.^