Two pieces with Japanese back stamps I can't ID

I searched online and on the Gotheberg marks site and could not find either of these. The pitcher is odd because it's more orange than it looks in the photo, but the handle is orange instead of green. I have not been able to find this exact one. The covered dish is about 9" diameter. Are there any other sites with Japanese back stamps? I always thought Gotheborg was the best.

 

Here's an ebay item with the same mark: https://www.ebay.com/itm/293717105515 No extra info. But it seems to imitate the della Robbia (sp?) style. The pitcher is similar to British ones of the 1930s/40s. Funny that gotheborg didn't have the round mark listed. However, it reminds me of the German "donut" marks. Nigh impossible to ID factory. The style of the second item makes me think it's a similar time-frame to the pitcher. Not much help, I know.

 

I picked them up at a local estate sale. I've used the covered dish a lot, but I really have to move some things out to make room for new (old) stuff. . The joys of collecting.