This question doesn't make a lot of sense to me but they started making model Seven's in 1983 and to determine the exact month and date there is a date code stamped on the barrel. A diagram of the location and the codes can be looked up here:
http://remingtonsociety.com/rsa/questions/barrelcodes
You will have to ask Remington.
Remington never made a model 67, model 76 (lever?), Winchester?
According to Remington's website, that model was made 1928-1933.
your Remington model 1894 shotgun was made in 1899.
All Remington model 870 shotguns were made in the Unites states.The Remington plant was located in Ilion,New York.
Remington's web site has a good model history section that will assist you.
With the serial number that you have supplied,your Remington model 1903 rifle was made in the year 1941.
The Remington was first made im 1946
The Remington Model 742 was made from 1960 until 1980, and it was replaced by the Model 7400 in 1981.
According to Remington 60,000 from 1967-1987.
All remington made springfield model 1903A3,s were produced by remington from october of 1941 thru Jan. of 1944.
Your Remington model 1903 was made in the year 1941,with the serial number that you have provided.