I am trying to identify an old pocket watch. Below are some pictures. Any info will be greatly appreciated since this has been in the family some time and no one knows when it was made and the brand. All that appears on the back is a train, Railway and faded the beginning on another word with Re....the rest is worn off. A repair person in my town said it is a Roskopf system, but the inside does not look the same and the brand is not visible. The are no marking on the inside besides the serial number 4999.