In the last couple of months I've managed to track down the author of the "Sponneck Saga." He is Geofrey Harry Sponneck, living in South Africa. He took a great interest in the artifact and that someone outside of his family would have an interest in such a thing as it relates to his family. After several correspondences he has helped me narrow down the possibilities to:
Wilhelm Franz v Sponeck (Major General) 1845-1913
Karl v Sponeck (Lt. General) 1816-1904
Anton Franz Heinrich v Sponeck (Major) 1845-1905
Theodor v Sponeck (Major General) 1869-1982
Hans v Sponeck (Lt. General) 1888-1944
He was also nice enough to send me a hard bound copy of his self published work, "The Sponneck Saga." It is a more extensive work then the online edition and is fully illustrated. He has also asked family members to look thru files to see if we can find an old receipt or membership card to finally put a face to this item. A true gentlemen.