Mah-Jongg Sales Company of America in flat red box.

Made from wood that (1x red and 3x black) has been handsomely lacquered in the Japanese manner.
Simple version with only room for ‘closed’ and ‘open’ tiles. On the bottom is a groove for the score strips. These are still unused. The racks, in their original box, are American but over here  marketed by The Continental Mah-Jongg Sales Company, Amsterdam.

Racks are in excellent condition.

Box is (except for the sticker) in sound condition.