Item: Fancy Antique Victorian Gold Filled Watch Fob Layering Chain Necklace. The clip is stamped JJS. This looks gold filled to me. 
 
Measurements: Total length, including the clip and T bar is 13 & 1/2 inches long. The length of the terminal ends and chain is 11 inches. The chain link is 7.5 mm.
 
Condition: Antique, previously owned. There are only very minor signs of age/use/patina.