Antique Quanlong Dynasty Reproduction Tea Cup?

by Rod James
(Anniston, AL. USA)

I bought this beautiful small tea/espresso cup from a thrift store last week and have tried to no avail to determine the manufacturer or its age. It has been stamped on the base with the Quanlong 6 character mark but also buried in the mark are modern "S213". The cup is 2 5/8" tall and 2 1/4 at the rim. It has one whit egret on both sides. The colors are separated as if the lines between them were carved out. It has a gold guild on the rim and handle and the cup appears to be fine porcelain. I would sure appreciate any experts out there that might be able to help out this amateur!
Thanks!
Rod