The Rare Enfield No1 Mk1 SMLE rear sight with fine windage/elevation adjustments is a highly sought-after collectable item from the era of World War I. Issued by the Army of Great Britain, this authentic piece of militaria offers a unique glimpse into the historical significance of the conflict. Made in the United Kingdom, this field gear item is a valuable piece for collectors interested in military history from the early 20th century. EFD Enfield inspection marks to the underside with intact bone insets to the elevation slide and working fine adjustments. A scarce early SMLE military issue rear sight.