Get the date code stamp off the left side of the barrel and look it up on the manufactured link on the Remington Society of America.
By it's serial number.Go to proofhouse.com to find the date of manufacture.
Depends on the Model if this information is available. All Remingtons starting in 1921 have a barrel code to indicate the Month/Year and can be looked up at the Remington Society of America's web site. http://www.remingtonsociety.com (link manufacture date)
The date of manufacture is determined by the Colt model type and serial number. See: www.proofhouse.com/colt/index.html
Compare it against known examples with a good date of manufacture.
The serial number is needed to determine the manufacture date.
Serail number and features
Contact Remington Customer Service through their website. Many Remingtons used a 2 or 3 LETTER code for dating, stamped on the left side of the barrel at the receiver.
Go to the Winchester Official Website enter serial # and it should be able to look up the specific gun, and hopefuly the manufacture date
need the actual serial number to determine the manufacture date of the rifle.
I own a Colt .45 Government Model C155009 can you tell me the mfg date and estimate value?
You will have to call Browning.
IIRC, Cornell Publications might have a book that can help