Unknown Z Marked Plate

This is a nice floral plate made by an unknown maker in the late 19th or early 20th century. I am fairly sure it is German and most likely Bock-Wallendorf or maybe even Potschappel but not entirely sure on that. It is nicely hand painted with a large floral arrangement in the center as well as a superb relief design to the entire rim including flowers and scrolls. Some grey, puce and blue highlights plus four hand painted small floral arrangements to the rim. Remnants of gold trim to the very edge. A really nice looking plate! The piece is in great condition without chips, etc. but has the already mentoned wear to the gold trim along the outer edge. A discolored spot to the underside likely from one of those old rusty metal hangers. Does not take away from the piece when on display! The plate is 1.25 inches tall and 9.125 inches in diameter. It is marked with the letter Z in under glaze blue with two dots below it as shown. Please email me for more information or other pictures.