Seems to me there were many 18k open face case watches made with multicolor dials in 19th century England. I have a good one, but I am impressed with the best I have seen owned by a friend. 1850-60?Snapshots here to show the fine detail finish work. How many hours needed to make this and could it practically ever be done again? Swiss immigrants in New York 1870+ started m.c. decorated cases. Mainly on hunter forms and 14K in U.S. Do not know of m.c. dials made in U.S. like this one anyway. Of course I mean here that the skills for case and dial decoration in the U.S. came late with immigrants. All I have seen that are m.c. U.S. made are 14k. English seem mostly to be 18k.
Photos not by me. Handheld Panasonic DMC-TS2. Weak reflected sunlight. Wide aperature F 3.3.