British Bone China 1830s?

I found this unmarked jam or sugar pot in the Sunday Marked. It has no lid. Most of the few over glaze enamel is already gone. The plain molded, hard and rather havy pot is translucent (porcelain? bone china?). The mold had three parts. Because of the kind of sprigs and also the other deco I thought it could be pre Victorian  - or do I have a fake since food rim and top rim aren't glazed? I was told that the piece came from Penang in Malaysia (British export?). In the Internet I couldn't find anything.                                  

 Thank you for any information