Presented here, a rare ROSSKOPF PATENT pocket watch, circa 1880. 
Original white color enamel (porcelain) dial with golden color arabig numbers over a guilloché base of imperial blue color translucent enamel (see pics, please). Dial shows a restauration at seven hour and some hairlines, please refer to the pictures. Dial is signed YANATA CALIDAD SUPERIOR at twelve o'clock. Original rose gold tone hands, style Louis XVI. Subseconds dial at six.
 
Silver tone metal case is signed outside its back cover: H. ROSSKOPF & CO  PATENT; it also has a curious SEAMONSTER/MITIC SEAHORSE (simmilar to the Omega Seamaster logo) engraved on back cover, please refer to the pictures.
 
Original mechanical with manual winding movement, Rosskopf patent.  The small pusher placed on case lateral near the winding crown allows setting time.
 
MEASURES: 54mm diameter, not including winding crown or hanging ring.
 
ESTIMATED AGE:  circa 1880
 
GENERAL CONDITIONS:  good general conditions, the dial has a restauration at seven hour and a hairline. Please, refer to the pictures.