So I stumbled upon Dovo’s website and noticed they have new pages that provide more detail on how their razors are honed.
https://www.dovo.com/en/ratgeber/sha...ing-hair-test/
They claim to use a 1k,5k,8k,10k followed iron oxide paste. The pictures however show a yellow hone ( coticule?) and what looks like a Thuringian.
Additionally, the yellow hone looks convex.