I assume that this had to be a registry set purchase. Sensible assumption or not?
The part that I don't completely understand is the scratching and clawing that goes on for a single point change in grade (typically at MS65 vs. 66, or at MS66 vs. 67). From an overall points perspective, it seems much more efficient to focus on set completeness rather than individual coin point values. Adding a single new coin at AU 50 is 50x more valuable than advancing a single coin from MS65 to MS66. Isn't it? Or do I not properly understand the scoring system? The PCGS registry set scoring seems very different from NGC scoring, where the higher grades get proportionally more points.