British Lee Enfield No1MkIII SMLE REAR BAND

Description

British Lee Enfield No1MkIII SMLE BAND marked 43
This was an extra with a 1918 issued BSA rifle. Looks like someone removed the makers stamp may have been BSA? Don’t know. Does have a 43 on one side no idea what that stands for?
This is in good as issued condition. No screw is included.
No international shipping USA addresses only.