A longtime member of the American Custom Gunmakers Guild (ACGG), M. Huey, makes cases like yours. When done, he makes a canvas case to protect the wood. I looks great but also serves to protect the wood which, in your case, is art. Have you thought about doing that?
I will follow this closely... I am completing a project gun and have been thinking about a case like yours. I want to see how you make the partitions and cover the inside.
I've thought about making a rifle based on a Martini. It's extremely difficult to get the graceful lines that you can with other actions. What you've done is the best I have ever seen.
Love the little Unertl. I have one.