Your pendant was originally a watch fob, a decorative attachment for a pocket watch. I couldn't find the exact design of your fob in my collection of jewelry catalogs. However, I've included a photo of a page from the 1905 edition of the Baird North catalog, that depicts a number of watch fobs of similar style. Based on this evidence, and the style of your piece, my best guess is that your price was made sometime between 1900 and 1910. Your fob/pendant is lovely --- such a treasure.