This is a very nice German violin. It may be a top-end workshop model, or a single-maker handmade instrument.
It has excellent quality wood, workmanship and tone. It has no label, but reminds me of an Ernst Heinrich Roth violin. I would estimate its age as being from the 40′s or 50′s.
The varnish is reddish with some brown tones. The back is a beautiful flamed 2-piece maple back. The sides and neck are very nicely matched. The top is a medium to tight grained spruce, and all of the wood is very well chosen. The varnish has some heat crackling, that is visible, but not excessive. The craftsmanship on this instrument is excellent.
The tone of this violin is really what stands out. It has a soft round tone with lots of overtones, and the sound carries nicely.
This would make a great violin for an advancing student, or orchestra section player.