1927 - will be date code stamped, see related links.
Need the serial number to answer.
The serial number that you have supplied,indicates that your Remington model 1894 shotgun was made in the year 1907.There were only 41,194 shotguns of this model made from 1894-1910.
12 guage? 1908
To determine the age of your Remington Model 10 shotgun with the serial number U55191, you can refer to the Remington serial number reference charts, which indicate that the Model 10 was produced from 1908 to 1929. The "U" prefix suggests it was manufactured in the 1920s. For an exact year, you may need to consult a detailed Remington production database or a firearms expert.
The Remington model 11 shotgun was made from 1911-1948,there was a total production of 300,000 made in all model types during these years,Your Remington can be dated by the letter code which is located on the barrel of your shotgun.The letter code can be also found on the web to help you understand what year your shotgun was produced.
It's date code stamped on the barrel, see related links for information on the Remington Society of America.
I can tell you it was made in 1928, that's about it. If the barrel is original you can get the month/year from the date code stamp. See related links. Also the Remington model 10 was made by Remington from 1911-1929
Remington Society barrel code lookup: http://remingtonsociety.com/rsa/questions/barrelcodes
In 1950 Remington introduced fifteen versions of the Model 870 shotgun, in 12, 16 and 20 gauges.
It'll be date code stamped, look at related links for information on the Remington Society of America.
Someone at the RSA might be able to help.
The letter I think