Hello, there is at least one issue when I look at the second tag see the pics.
All original period EICKHORN tags I have seen (and I own some) have the all black background. I am not aware of a variant with partially bright background.
Generally you can judge such an insert only by taking it (carefully) out of the tag and look with a loupe for copy points (printing does not have such points).
Regards,

EICKHOR TAG.JPG (49.14 KB, 140 downloads)

wotan, gd.c-b#105

"Never look for sqare eggs" as a late owner of an original FHH-dagger used to say.