I believe it says "Fena", but all I know is a lot of work went into this and I believe it is probably Dresden or Volkstedt. About 3 1/2" tall to the rim, and 4 1/4" to the top of the handle. Very very detailed hand painted example I would date to about c1850 or so. Amazingly fine work.
Antique 19c German Porcelain Hand Painted Fena Scenic Cup