You can contact Springfield Armory Customer Service at 800-680-6866.
your 1911 was made in 1912 by Colt or Remington
Serial # N5102889 Made
Colt made your 1911 in 1918. the springfield slide is incorrect but not unusual.
Your 1911 was made by Colt in 1918.
Springfield Armory, 1915.
Made 1913 probably by Colt or Remington.
your 1911 serial number indicates your 1911 was made by Colt in 1914
made 1914 by Colt. not unusual to see springfield slide on a Colt frame
Contact Customer Service through Springfield's website.
your 1911 was made by Colt in 1918. Only the serial number denotes the 1911 maker not the slide.
your 1911 was made by Colt in 1914. makers of 1911 is based on the serial number not the name on the slide...
made by Colt in 1914. not unusual to see a springfield slide on a colt frame.