While I’m at it, as your nitpicking senior moderator AND Math professor (!), let me also point out that the correct reference of the SPECTACULAR 175th Anniversary Rare Handcraft presented around minute 2:00 of the video is *5089G-021*, rather than 5189G-021 (just a slip of the tongue by one of the top Patek historians on this planet, N.F.. In fact, to the best of my knowledge, reference 5189 never existed)👍