You will have to call Colt
Colt's customer service says 1996.
It tells the year of manufacture of a Colt.
Proofhouse.com has Colt serial number tables.
i would like to know what year that colt MK IV series 80 with serial # 302587 manufacture and what made is this?
made by Colt in 1913
Call Colt with the sn and they will tell you.
it was made by Colt in 1917
Your colt was made in 1956.
No serial number provided.
To determine the year of manufacture for a Colt 1911 .45 based on its serial number, you'll need to reference Colt's serial number charts. The Colt 1911 was produced from 1911 onward, and the serial numbers were assigned sequentially. For example, serial numbers starting with "C" typically indicate a production year in the 1940s. For a precise year, consult a detailed Colt serial number lookup or Colt's records.
Can't be answered without the serial number.
Proofhouse.com has Colt serial numbers you can look up