serial # ??

My Krag carbine (rifle) reciver is marked 1898 ,but the serial # 162967 dates it to 1899 any reason why?Thanks.
Dick
[img]http://i130.photobucket.com/albums/p...6/000_0020.jpghttps://www.milsurps.com/images/imported/2011/07/000_0018-1.jpg[/img]:confused:

1898 is the model, not necessarily the manufacture date.