Samuel Marti Et. Cie. Medaille De Bronze. Open escapement Slate and Marble!. The reason I am selling it is because I have 2 more. This clock has one problem, it only strikes once on the hour. When I first got it, it never did this. I have always taken the utmost care with my clocks as well. I am not sure how much this would cost to fix or adjust, other than that it is a wonderful timepiece!