This 12-1/2" diameter by 2-1/4" tall lily pan, as it is labeled on page 135 of Six's Lotus book, but shown with a different decoration, looks to be identical to the one we have here. The bottom has a 7-1/2" diameter ground and polished marie. The decoration has been in the Gallery for 14 years as an unknown: http://www.chataboutdg.com/gallery/details.php?image_id=572