On the headstock decal (the photo's upside down) it looks like an image of red sealing wax on a white scroll with a gold monogram of a large "G" surrounding a "B" with a "V" woven through the other two letters. All are Uppercase.
Usually in a monogram the largest, most prominent letter is the surname. And the Given name is the next prominent. Remaining initial is the middle.
In this case, I think the G is the family name and the V the first name. (Or visa versa.)
Hope that helps a little.