Yakusugi sake masu cups /measuring cup (yaku_2)

Description

These are nice Yakusugi sake cups or measureing cups.
There are 5 pieces and each one is stamped with Yakusugi mark.
It will be nice to have Sake with these cups.
Largest one is 3.5 inch X3.5 inch X2 inch.
I think the largest one is 1 cup in Japanese measuring which is about 6 oz ( not sure).
Yakusugi can be seen only in Yakushima island which is located in Southern most of Japan.