I picked up, at an auction, this Art Deco Clock with a Westminster Chime and happily it is running and chiming nicely. It came without a pendulum, so I am using one from another clock I own. The face and the movement are not signed as far as I can tell. The only information on the movement is a C in the lower left corner and a 15 in the lower right corner. A note is present on the inside of the rear door, I am not able to read it and do not even know the language. It seems to be saying that it is an 1899 German clock, but I could very well be wrong. Any help regarding the maker, model, age, origin, and so on would be very much appreciated. Also, as it is my first clock of this type, I have a couple of questions regarding using it properly. I am used to clocks with one or 2 winders (one for chime and one for time), but this one has three and it also has a slider on near the 3 on the dial. If someone would be kind enough to explain how to use it properly (the function of each winder and the slider), I will be forever in your debt. Thanks so much for looking and any assistance you can render!