"N" - normal length butt (they came in several lengths for different proportioned shooters)
"Crown over 2A and E" - Enfield factory view mark (inspector)
"half bisected D" - Enfield factory mark (this is who made it)
"broad arrow" - accepted for government service after inspection.
Nice piece, looks correct for any SMLE made by Enfield between 1903 and the late 30's.
Perhaps it may also stands for “Navy”…




























