The first model 41A targetmaster was made in the year 1936.the Target master series of rifles which includes the model 41A,41AS,41P,41SB were made from 1936-1940.
The Targetmaster is the Model 510, it may have 1922 patent dates on it but it was made from 1939-1962 and they made over a 1/2 million of them in five variations.
Remington never made a model 67, model 76 (lever?), Winchester?
Remington made 306,880 model 41 Target master rifles from 1936-1939. See related links for information on the Remington Society of America for the date code information stamped on the barrel (month/year)
October 1947.
The Remington was first made im 1946
they first came out in 1962.
They were made from 1939 until 1962. There is a 3 digit code on the left side of the barrel just in front of the receiver. The first two letters indicate the date of manufacture. You need to look at a barrel code list and match them up.
According to Remington's website, that model was made 1928-1933.
That would be the model 552 first made in 1957
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.