Russian Violin Rigart Rubus German Copy Needs Repair Junk

This is a German-made copy of a violin created by Rigart Rubus of Russia in the 1850s, featuring a rounded edge without a chin rest. It has no label.
This is a rare violin, with very few existing worldwide, making it difficult to find.
There are several areas that require repair.
The button area on the back has already been repaired.
There is a crack on the front.
The gaps between the back plate and the ribs are peeling in several places.
A portion of the ribs is peeling at the corners.
Please check the photos for further details.
Therefore, it cannot be used without repairs, but it is considered valuable. Given its age, the sound quality is also expected to be good.
The soundpost is in place.
It will be shipped in an old case.
Please note that this is a no-claim, no-return sale.