Oban & Koban ?

It is the replica coins of the Edo-period from 1603 to 1867.

An Ōban (大判) was a monetary ovoid gold plate, and the largest denomination of Tokugawa coinage. Tokugawa coinage worked according to a triple monetary standard, using gold, silver and bronze coins, each with their own denominations.
The koban (小判) was a Japanese oval gold coin in Edo period feudal Japan, equal to one ryō, another early Japanese monetary unit. It was a central part of Tokugawa coinage.
Japanese believes that putting Oban & Koban at home will bring fortune and best wish for wealth.

This rare find highlights 20 of all the signature Oban Koban during that period in Japan.
It is a rarely seen WELL KEPING Fine art and crafts with flat frame of Oban & Koban