Sugar bowl China, 1800's iron stone pottery

Good morning!
This is my antique sugar bowl. I adore it but am so curious about its origins because I can't seem to find anything. I've asked a few people and done research but don't have anything definitive. I think it's from the 1800's, it might be iron stone pottery but the stamp on the bottom seems different than what I've found. If anyone has any insight into this English China I would love to know more!
Thanks for looking