Not sure where mine was made, under the crown its stamped E.R. Can I assume that this was made at the Enfield factory? Also, the serial number on it is 7449 (no prefix).
ER is "Edward Rex" (King Edward VII)
Reigned 1901 (after the death of his mother Queen Victoria) until 1910 (when he died).
Mine are not the best, but they are not too bad. I can think of lots of Enfields I'd rather have but instead of constantly striving for more, sometimes it's good to be satisfied with what one has...