[Richard Simon]

Hello,
One of those string-maker encyclopediae mentions the Kloz/Klotz family of violin makers, and describes the second-generation Sebastian's instruments as 'unremarkable,' 'cheap,' and likely made for students.
The label is not hand-written; it says Sebastian Kloz, in Mittenwald, 1803. The same encyclopedia casts doubt on the authenticity of the label.
As the photos reveal, there are glaring issues including a probable bass bar crack, a treble-side body-length crack, and (not pictured here) a broken scroll repair.
An old flatback soldier, war wounds aplenty, patched clumsily to keep it in service. Sounds nice, if 'unremarkable.' It's more endearing than a new Chinese hybrid; in fact, I sold one of those after giving it a year of daily practice. Unrequited love.
The seller insists he played the Klotz for ten years without impediment from any of those old repairs. He's offering it to me for a little more than the proceeds of the hybrid sale.

I could buy it, play it and pray for its continuing stability, or buy it and address the issues over time, one by one - assuming they don't conspire all at once.
If it is indeed a student-level instrument, even after a full-scale restoration the bass would an old, run-of-the-sawmill bass with numerous repairs - not much competition for modern instruments that arrive with little or no problems - except the new stuff tends to sound immature for a long time.
Is it worth rolling the dice for such a bass? Thank you.