My name is Jon
I can tell by the design and style of this Gilbert Mantle clock it was made between 1890 and 1900. If you can get me a photo of the manufacture's label on the inside of the back cover, I can get you a more specific date of manufacture. Do you have other information about this clock that may help me?
That is unfortunate the label is missing. It was defiantly made between 1890 and 1900 but was most likely made between 1890 and 1895. Without the label it is nearly impossible to get an exact date.