What an interesting find! It would be fascinating to learn how that cup ended up in Trabi's dad's estate.
I read the Wikipedia article, and…Wow! What a book/documentary/movie that story would make!
Years ago I discovered a book written by a widely respected Canadian journalist, Matthew Halton, who reported on the war in Europe and North Africa from its beginnings. He wrote a book, titled Ten Years to Alamein, that includes a chapter about Finland's Winter War with Russia.
You won't find a more mesmerizing account of that aspect of the war, and you can't possibly come away from reading it without a deep appreciation of, and wonder at, what the Finns accomplished in their effort to keep the Soviet Union at bay. Copies of the book are availble at little cost from the Advanced Book Exchange. I can't think of a book that I would as highly recommend as this one. The history of how the Finns sank Russian tanks as they crossed a frozen lake is worth much more than the cost of the book and shipping!
Bob
On the bench: A diorama to illustrate the crash of a Beech T-34B Mentor which I survived in 1962 (I'm using Minicraft's 1/48 model of the Mentor), and a Pegasus model of the submarine Nautilus of 20,000 Leagues Under the Seas fame.