So you need to identify elements that differentiate between the lower and higher end (condition, originality, private sale vs dealer).
It sounds like it’s a private sale so obviously discount (higher) prices from dealers. However, it appears to have a good case with remnants of the original finish. On the negative the crystal has an issue and you cannot get a movement shot. As a result I’d say, towards the middle part of the spectrum, perhaps slightly higher, for private sale prices.