I went through my Eicks and found a similar example on a presentation Luft2, with the lower TM positioned on the side opposite the etching.

Obverse.JPG (40.37 KB, 105 downloads)
Reverse.JPG (39.16 KB, 105 downloads)
Obverse Etch.JPG (40.33 KB, 105 downloads)
Reverse Crossguard.JPG (40.23 KB, 105 downloads)

Always looking for Eickhorns and etched bayonets.