Noordeinde 150 is a short walk from Panorama Mesdag that I posted about in 2023. Stūber did have a shop at the address, he had learned the craft in Markneukirchen. He signed his builds, so yours only passed through his shop.
That seems logical. If I could ask one more... when one says, "from the collection of..." in this language, what does it mean? Here, we would take it to mean it was an item personally owned, or part of a group of things that belonged to the person or organization.
Maybe one of those things that doesn't translate well? The cello is very well-made, of solid wood, and all carved too, nice scroll work. But certainly not a master grade. That it is fractional-sized suggested to me from the beginning it was meant as a student instrument. A serious student, with a slight build. Perhaps a young lady. I hadn't considered it was the personal property of a violin-maker. I had it completely disassembled and there were no other markings, only some well executed repairs.
*beautiful place. I should add to the travel bucket-list.
