You will have to call Colt with the serial number to find out.
Colt 1911 .45 serial # 171885 was manufactured in 1917.
The Colt government 1911 .45 with that serial number was made in 1944 by Remington Rand
don't find any 1911 45's serial number ending with a letter. ???
Your Colt model of 1911 dates to the year 1918,with the serial number that you have supplied.
$500
1918
check pistol aagain. serial number appears to high for the 1911 military
None with a LH prefix in the serial if you talking about a 1911.
A government issue Colt 1911 .45 with that serial number would be 94 years old. It was made in 1918.
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.
1918
100-10000 USD