Hello Gaspare and thank you on your response on these rings.

Yes you are absolutely correct on those two rings on the left being made by the same jeweler of Wilms (skull with runes and the ss ring just below) they both have same ring band design.
Your correspondence with the member of the Wilms family is just amazing and historically very important to these rings made by Wilms.

Thank you again on your kind words
Best Regards G
Ado