Here’s a fun real photo postcard I came across on German ebay, depicting one Reinhold Schattschneider on the violin with his buddy Fritz on the guitar.
On the back of the postcard Reinhold writes that he made the violin himself.
The photo was sent to Reinhold’s niece or nephew as he calls himself Uncle Reinhold.
Unfortunately I cannot identify the location of the photo, therefore cannot find anything else on him in the digital archives. Without the location or even date, I cannot be sure I would research the right person.