Description
I found this piece on Internet. It's marked Othello, so it's probably from MegaHouse, that I know that makes a pocketable version.

Playtime image
Discs material
Board material
Brand	MegaHouse?
Year of production
Place where bought	Japan
Box image
Happy End Graphic Set (click to download and unzip in the Happyend\GraphicSets directory)	Not made yet.
Differences Graphic Set / original board
Usability	/5
Look	/5
Author	Beppi Menozzi