If you could take a picture of the front of the plate and the back stamp, that would be great! Thank you!
One suggestion on finding other pieces would be to join the flow blue club. All the members are really helpful in keeping a lookout for patterns other members are looking for: there are several dealers in the club. Also, you can advertise in the Blueberry Notes, the magazine that comes out 5 months each year. There are also the conventions and regional meetings that are held each year. It really is a good deal for the price and you will learn alot about flow blue and meet alot of really nice people! Good luck in your search.