Hi all. I need some help here. I've got a creamer and sugar bowl set, black with what appears to be pewter design, dragon motif. There are four Chinese characters along the lid. There is a raised stamp on the bottom that says 'Shanghai, China', with more chinese characters above it. I'm not sure if it's all metal or if it's black colored pottery. Stands approximately four inches tall. Does someone have any idea who might have made it, or any more information at all?