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Contacting the manufacturer is a step in the right direction.
Model 1911 commercial .45 with serial number 287589C was made in 1960. It was not a government issue.
Colt will provide a historical letter for a fee.
That Colt model 1911 was a commercial model, not a government model and based on the serial number, it was made in 1947.
There is no such thing as a "model 702337". The number you list appears to be a serial number. The Model number will be stamped on the barrel, or on the upper tang behind the hammer.
You can get a historical letter from S&W for 50 USD.
You will need to include the model number of your Winchester to get a answer.
government model 70 45 cal
You can type all the information about the government you can make a model showing the three parts of government or a timeline of all the things that happened throughout government history.
other nations have used the U.S. government as a model
Date of manufacture was 1923
With the serial number that you have provided,your Remington Rand model 1911 was made in the year 1943.