HamiltonPhilatelic.org claims that "there are about 14 intact albums in existence". Not sure when the article was written.
http://www.hamiltonphilatelic.org/p...20PROOFS.pdfSiegel also sold an intact album in 2013. This Linn's from 2015 article speaks of that sale and states that census numbers in 2014 showed 15 intact albums.
The Leupp album has made the rounds having been sold by Cherrystone in 2010 prior to the 2013 Siegel sale....
https://www.cherrystoneauctions.com...SEVELT+ALBUM....and again in 2012.
https://www.cherrystoneauctions.com...sevelt+AlbumThe Shelby M. Cullom album was sold by Spink in 2006.
https://stampauctionnetwork.com/f/f801.cfmhttps://www.linns.com/news/us-stamp...roken-u.htmlChristie's sold an intact album in 1997. No way of knowing if it is one of the albums sold by Siegel later on. The description does not have the owners name in it as with the other two discussed above.
https://www.christies.com/en/lot/lot-239824