The mark belongs to Zeh, Scherzer & Co porcelain factory in Rehau, Bavaria, Germany established in 1880.  This specific mark shown was used between 1899 and 1910.  Z-S is known for producing high-quality, elegant porcelain dinnerware and decorative items.  
This item has a melon-ribbed, scalloped body with pink rose bouquet on both sides.  
There are no chips or cracks.