looks „over restored“ in this image, don‘t you agree? The dial... very strange. And also the case is not in such great condition. There was quite a lot pf polishing on this.
Personally, I would not go for a piece that is super rare but not in excellent condition. Even a well kept 2438J I woulf prefer, or one in R...
The 1591 is interesting in this line-up. But then one would have two QP of the same time. Next to 2499 and 2438 I would probably add 1436 and also a 2526 first series.