Never heard of a serial that high, maybe that 7 is a 2?
In any case you can tell the date of Model 12 with a serial this high because it will be date code stamped on the barrel. Please see related links for information on the Remington Society of America.
1910
i have 2 Remington model 141, carbine serial #c 69757 and a 141 gamemaster serial #25543. what are the production dates and how many were produced?
With the serial number that you have provided,your Remington Rand model 1911 was made in the year 1943.
Greatly depends on what model it is.
1919
1912
Manufactured 1915
Manufactured in 1913
Early 1909.
by serial no
Manufactured 1916
Manufactured 1931