For completeness sake, this is actually one of the most impressive collections of US singles I have ever seen. Love the Scott 55. When I see a collection like this, my initial reaction is similar to reviewing autograph collections of signers of the Declaration of Independence. Since most are of necessity incomplete, I look to see what signers, besides Thomas Lynch Jr and Button Gwinnett, are missing, as a presumed measure of rarity in the marketplace. Same is true of the referenced Siegel offering. Considering what is there, there are still 5 or so items I am surprised that are not included. It would be interesting to have a conversation with the collector as to whether this was because of choice, interest, or opportunity (lack of means does not appear to be an issue)as well as during what time period this collection was assembled.