| Diesel loco #503 holds a unique position on the Green Bay
        Route roster, since there were actually two different Alco FA-1s with
        that same number.
         Most all sources (if not all of them) say GB&W 503 was delivered
        in 12/1947, along with KGB&W 501 and KGB&W 502. So the original
        FA-1 roster was:  
        
          -  KGB&W 501
 
          - KGB&W 502
 
          - GB&W 503
 
         
        In 4/1949, two more FA-1s were added, KGB&W 503 and GB&W 507.
        At that time GB&W 503 was renumbered to GB&W 506 to avoid
        duplicate numbers. So the roster at that time was:  
        
          -  KGB&W 501 (1947) 
 
          - 
        KGB&W 502 (1947) 
 
          -  GB&W 506 (1947) � ex GBW 503 
 
          -  KGB&W 503
        (1949) 
 
          -  GB&W 507 (1949)
 
         
        What seems puzzling is that a list the builders photo
        at left is of  503-507 Logically, this should be a photo of  KGB&W 503 and
        
        GB&W 507, built in 1949. 
        Both  503 and  507 in this photo are lettered for GB&W �
        but #503
        should have been a KGB&W locomotive! 
        So that raises a couple of questions: 
        1. Is the image at left  actually a builders photo? Does anyone
        have a copy where they can verify the numbers on the locos? (The one on
        the right looks like 507, but the one on the left looks a little fuzzy.)
        Is it from the second set of FA-1 engines built in 1949? 
        2. In 1949, was a loco delivered as  GB&W 503(2)? And then
        renumbered as  KGB&W 503 while at the same time the original
         GB&W 503(1) renumbered to  GB&W 506? This seems like a lot of redundant
        work, even for a railroad.  |