Saw that same post on FaceBook. That person turns out to be a friend of a couple of my Vietnamese friends. He lives in the Los Angeles area.
What is very unusual is that a lot of people are receiving their 800mm PF within the last week or perhaps 2 weeks. I started this thread in late January (24 January, 2023) so that it has been just a little more than a month (today being March 3). We have around 95 posts now, but something like 50% of those 95 are from within the last week.
What is interesting is that the high mark for the recent serial numbers seems to be Leonard Shepherd's 20006370+, but Jerry "LensWizard" got one 200054**. It is like Nikon has shipped some 900 800mm PF lenses within 2, 3 weeks. It could be a combination of (1) a lot of new PF elements that take 7, 8 months to fabricate are now available and (2) the end of China Covid lock down a couple of months ago is accelerating the final production of lenses. So far all Nikon PF lenses are manufactured in China.
Thanks again to all who are providing serial numbers.