Japanese successive Coin OOBAN and KOBAN. Pure gold · pure silver · plating

Pure gold, pure silver, a plating guarantee.

There is a mention on the back of the box.

A miniature of a coin of successive generations.

■Size of the box. 

 2 cm(0.78") in height.

18.5 cm(7.25") in width.

9 cm(3.53") in length.   

Weight 229g/ 8.06oz.    

Age Unknown.

Material ：Pure gold, pure silver, a plating guarantee.

Good condition.