I couldn't find anything when I looked up Mayama Kiln, so I don't think the workshop exists anymore. This item was likely purchased at a department store, so I believe the quality is assured! It's a plate with a beautifully painted bamboo design. I've been displaying it for a long time! As far as I can see, there are no cracks, chips, or stains, but please refrain from purchasing if you are overly concerned about such things! I will also include a plate stand as a set!