Probably 1927. Best to check the barrel codes, look up the details on the manufacturing date on the Remington Society of America.
Depends on the model.
Remington Works - 1914 (late)
your Remington model 6 was made in 1998,due to the S prefix on the serial#.
1914
1913
1920
1919
1920
1915
1912
1920
1923