hello to everybody, i am fairly new to collecting and am needing help on one watch in particular. i am trying to date and find any more info on my zenith pocket watch from the serial number with no luck. does anybody know where i might get some more info? the serial number on the movement is 1726093. on the face of the watch is the name "Carl Rahm" and under the name is the are the letters "I/B". any help would be greatly appreciated.