This violin has a very convincing replicated label of Georg Kloz (1687-1737) who was a contemporary of Stradivari - almost illegible (see photo).
However, a closer examination reveals many of the techniques and trappings of mid- to late 19th century German trade workmanship, leading one to conclude that it has nothing to do with that maker. Two things stand out in this respect - the scroll truly is perfunctory, with incomplete fluting; the two somewhat conspicuous 'cracks' in top are actually not cracks at all, but scratches carefully executed to resemble cracks, done to make the violin look older. Furthermore, the general wear on the body and corners simply don't tally with what one would expect from a violin of around 300 years old. A calculated guess would date it to around 1880 or later, but it's probably not older.
The conclusion is that this violin is in fact in very good structural condition, despite a few repaired seam separations to the lower back and ribs and a wing crack to the treble F. Some worm damage to the upper treble rib has been repaired and poses no threat to structural security.
The slab-cut one-piece maple back, ribs, neck and scroll are of somewhat plain wood, but not unappealing. The top is of finely-grained tone spruce. Workmanship and cornerwork are tidy. This instrument is unusually highly arched, even by German standards.
This violin is well-toned and a pleasure to play. It should serve a musician for many decades to come.