Miniature Porcelain Vase in an Iron Oxide Glaze

This is my favorite of the three iron oxide pieces i picked up at the flea mkt yesterday. it's only a couple inches tall and it's signed on the bottom 'CHINA'. I'm pretty sure that it's from the turn of the 19th/20th century. what do you think? miniature vases are really sought after these days and an iron oxide one that is signed is a really good one - i think.