This is a clamshell game featuring a print of a man and woman in Heian period attire. Clamshell size: Approximately 7.5cm x 9cm Felt mat size: Approximately 18cm x 24.8cm Clamshell games are considered auspicious for good relationships because the shells only fit perfectly together as a pair. They are also a part of the Hinamatsuri (Girl's Day) doll display. This item has been stored without being displayed since purchase. The informational paper about the clamshell game (photo 10) will be included. Although it is new and unused, it is made of natural clamshells, so there are original natural imperfections. Please check the photos, which were taken from several angles.