This game comes from the estate of a Japanese interior designer who lived and worked in Chicago for many years.  Along with her kimono, we like to offer non-textile vintage Japanese items when we come across them and hope that other Japanophiles enjoy seeing them.

This is a full set of pieces and English instructions for the game of Go.

The wooden board is folded and hinged, and the black and white pieces seem like they haven't been used. 

From wikipedia.com:
Go is an abstract strategy board game for two players in which the aim is to capture more territory than the opponent by fencing off empty space. The game was invented in China more than 2,500 years ago and is believed to be the oldest board game continuously played to the present day.

Comes in the original box.

The board is 12" square.