Nippon Yoko Boeki Set of Four Kitten Japan Mid Century Modern Cat

Here’s a set of four kitten siblings all in various poses of mischief. Grey and white with adorable detailing. From my grandmothers estate. No broken pieces but crazing noted throughout due to age. 3/4 are marked “Japan”. The other is missing its sticker. Smoke free home; collectable; very vintage Nippon Yoko Boeki Japan