If you go to this site and scroll down to mark 434, I think it looks like the mark on your piece. http://www.gotheborg.com/marks/20thcenturychina.shtml It's about 1/3of the way down the page under "impressed marks" it looks close but I may be wrong.
That's close alright......at least the top half....! So, looks like it's nuthing old or special....just pretty..! 434. Mark: "Pottery Studio / Home". Modern, made in Taiwan? I can deal with pretty ! Thanks.