The trademark for sure has to be set into the III.R period. This one came with several other bagged and tagged daggers directly out of a EICKHORN retailer shop which has been closed towards the end of the war. To avoid any misunderstandings: This bayonet has a plain blade.
Concerning etched bayonets time frame: Those etched remembrance and unit etched bayonets were bought during peace times, when they had done their duty (at a certain unit) and went back into private life. As this was not the case any more during war (at least for the huge mass of soldiers) the sense for any remembrance etching was lost and therefore not used any more. Perhaps very very few exceptions do exist which I have not seen until yet.
