And for giggles they cite a similar watch from Isnardi, which is entirely the same if you don’t count the fact that that one has a moonphase http://www.sothebys.com/en/auctions/ecatalogue/2018/important-watches-hk0789/lot.2512.html
This feels like 3 different watches jumbled into one description. Pictured is an Apollo XI 20th Anniversary from 1989, described is a watch from 1969, and the bottom text offers to point you towards another example of the Speedmaster Moonphase. Sotheby's is really working hard to earn their premium here I see