Set of 4 vintage Japan cups / bowls signed

I was unable to find this mark, so I can't tell you just who was the manfacturer. It looks to me that they were made in the 40s, right at the transition between the marks in Japanese, and the stickers. These cups measure approx. 3" across the opening, 2" tall, and 1.5" across base. Feel free to ask questions. Sorry, no shipping Saturdays.