Blank face

In this case it's difficult to tell IMO how the ribs were made, in a mould or the "Vieux Paris" way with preinstalled blocks, both possible. But there seems to be a line, from Martin's example to this one (showed it once before) featuring clear french Caussin style with same Cappa label but rib joints obviously clamped the "Schönbach way". Even the scroll looks similar, though a bit more refined and not blackened inside.. Kauert writes somewhere in his book that the Schönbach wholesalers, trying to become more independend from Markneukirchen, used some French connections, and maybe here we have found them.

I saw this in Ebay recently. We talked a lot about "South France" in the Auction scroll and elsewhere.

This type is often, but not always branded Tourte. Important is only the San head shape of the head with the circular rear. The actual brand looks bogus anyway. It seems to be pernambuco and silver mounted, so it’s no cheapish version. FC gave a lot of examples in the linked thread to compare with.

This was the Seidel. I didn't take off the fingerboard, but am assuming that there wasn't a screw. It's probably clear what I was thinking of. Photos of the rest could tell if the OP is an English or Saxon violin.

Photos of the whole instrument could give some more clue, also a view through the end pin whole to see the upper block. Maybe there’s also a plateau of a former through neck visible?

I once had a Seidl from Markneukirchen with a throughneck like this, just without screw, so I’m assuming that is or once was alike. Maybe someone installed an upper block, cut off the through neck and screwed it to the block.

I rather tink the gap proves that the neck once broke out, took a piece of the belly while leaving the chip down left still being in perfect line with the body. But at least this all might prove only that people can see very different things looking at the same. The main point seems to be that I'm assuming this slightly rougher made scroll could match the body and Martin thinks the opposite (and BTW, I just exchanged a similar fruitwood board at a rather nice and elegant JTL neck). So this can't be solved, maybe even not with a UV light test. I agree that it won't change much, and we can leave it alone.

This shading is related to the "Caussin effort". In my experience there were many instruments varnished exactly this way. A the actual heel/button photo it all seems the same, colour, varnish, marks, so I can see no evidence that the neck doesn't belong; just badly reglued.

In my eyes it looks like the typical "moustache" made from the start. The fingerboard is a fruitwood being very prone to this wear due to the use of steelstrings.

I wouldn't interpretate too much into the - with all respects - basic photos here. I agree that the neck seems to be (re)glued lopsided and with a step between button and heel, so there's not much objective evidence if it's original or not. Might look much different in colour in real life than it seems to be now, and also workmanship could be more homogenous. At least it's a basic shop instrument we can't know who made the parts nor the reason why the particular body and neck were assembled. Also the scratches could be rasp marks, deliberate antiquing or accidents.

The price might depend of the actual condtion which is difficult to spot at the photos, and also from the location. Could vary from low hundreds to maybe very low 4 figure Euro in best condition

The different shade of colour is more likely dirt or antiquing. But the scroll was exactly what made me think "using Schönbach parts". It happened like we've seen sometimes before. Mind the filemarks at the ear.

The one piece belly looks un-Schönbachish. So rather Mirecourt.

Could be a low grade "Caussin school" either, maybe even made from Schönbach parts.

To call yourself rightfully at a label or shop sign an "Instrumentenmacher" one would need to make a single instrument only for the Meisterprüfung. Noone would ever have cared if the rest was just bought in from elsewhere., and it was and is still done this way very regularly. BTW, the pictured instrument with the Ole Bull brand looks to me like from the "usual" Dutzendware from the late 19th century, so the bogus label inside is insignificant anyway.