Subject:Re: Help with this big 'imperial style" seal
Posted By: Bill H Thu, Nov 29, 2018
I'll defer on the seal script translation to those better qualified, while providing some comments and photos for comparison. Below are some images of a somewhat larger seal with molded dragons on top that I found at an estate sale several years ago and eventually sold. It had some damage and was missing the base with its seal, which judging from the two handwritten characters that loss exposed on the interior, likely was a faux Ming Jiajing (嘉靖) mark.
That seal of mine was molded in soft-paste pottery, which I also suspect yours to be, so may have been made at one of the Shiwan-area kilns in the Guangzhou suburbs. In my opinion, both probably were made in the Republic period or first few years of the People's Republic. Yours seem to have benefited from a much better job of molding and glazing.