Thanks for the point Gerd.
I have a question/comment. You indicate that the photo was taken in 1914. The 10/30 PS was introduced in 1913 and was manufactured until 1921, with an interruption from 1914-1918 due to the war. According to my reference, Loeb and Company produced the LUC and became Loeb-Werke AG in 1914, but the product name was not changed to Loeb until 1919. Therefore, even though the 10/30 was the same design both pre-war and post-war, should the puzzle car technically be a LUC, rather than a Loeb, if the photo was from 1914, or did the name change actually occur in 1914, with the change in company name, but just not show up until 1919 due to the war's interruption?