Sorry for my late response, I'm just now seeing the post.
RCDNISRTNEDA is a big contender and is certainly plausible.
Thanks for your help
The cross has more similarities with the oldenburg sword.
a hatched diamond with stripes in the middle, small pronounced triangles at the end of the arms and arcs at the small triangles. I also see a curl like the oldenburg sword at one triangle.
The cross looks more like the cross of the oldenburg sword but is less stretched.
best,
Jasper