Have found a tall case recently that I am interested in purchasing. Since my experience with these is limited, I am interested to know if anyone can help me identify some of the characteristics that are present. The owner has indicated that the clock is from the 18th century. The case is in excellent condition and has two unique features that I need help with. First is the movement: it has brass gears but wooden plates. Is this indicative of a specific time period of construction or has someone possibly replaced the original wooden gears with brass? Second is the dial: it is made completely of wood. Again, is this something that indicates age or time frame? Any help is greatly appreciated.