Late-war MG34/42 Spritzkanne oiler

A late-war variant of oil bottle, or 'Spritzkanne', for the MG34/42.
 
This example comes complete with the original spout and end cap - which can be reversed and stored away within the main body when not in use.  
 
There is an ink Waffenamt to the base of the correct style as can be seen on late-war issued kit, but we are unsure as to authenticity on this piece given having not seen one before.