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Another couple of mugs that are the Japanese stacking variety with the “two-finger” handles. These are actually mold marked on the bottom as “Japan” and what looks like “S.I” in a circle? I forgot to take a picture of it. The pattern is a dark brown and yellow checkerboard pattern with white flowers on top of it. I wish I knew what company made these, or if it was several companies who all used the same design. They do seem to be fairly common - I’ve no idea on when it was producecd as well.