The British Pattern 1871 Elcho sword bayonet is indeed a scarce sawback bayonet and in particular those that are Enfield or Ordnance marked as this example is. Those that are not so marked being known as Volunteer Patterns. Total production of these bayonets at Enfield totaled slightly in excess of 1600 and when many were lost during the extensive trials period, few today have survived and many that have are only in average or less condition. This bayonet is slightly in excess of average condition but shows peppered pitting and some patina.but is without damage.
This bayonet is Ordnance/Enfield marked to the ricasso with the WD^ marking. The same Enfield inspection marks (Crown over E over 27) are to the back of the blade and also on the tang/pommel. The WD^ acceptance mark also shows on the the face of the crossguard. The serial number “12” shows on the pommel above the release spring. Reference WW 777 (and pages 309 – 313) and BCB B183