This was one of the actual movements that kicked butt in the last Neuchatel Observatory Chronometer competition.

It's as ugly as sin, but I really want it. Problem is I don't have $35k.

For sale on Ratuken

 

@timjohn as a collector and fan of vintage Grand Seikos, I agree with you that in terms of collectability, this is indeed the holy grail. But I not sure about the wearability and the looks (have to say it's far from the best looking). Plus the $35K asking price is ridiculous, even for the 18ct gold case.
Why not get a 4520-8000 with the grammar of design case in steel? Same movement, great case, wears very well. Here's mine...

 

Nice. I'll see your 4520-8000, albeit with a bit of foxing on the dial

And raise you a 4502-7000

 

So I have a qn. We know that the first watches that got into the real Japan chronometer status are the king seiko. So would chronometer KS be > GS?

 

IMHO, the holy grail is the Imperial GS, though this was written about after the last update to this thread

https://watchesbysjx.com/2020/09/imperial-vfa-seiko-4580-7020-emperor-hirohito.html

 

What a fabulous story to a watch, and a fabulous watch. Thank you for posting that. Now I want one!!

 

Another one, "found in a cupboard", was shown and presented at: Uhrforum.de

https://uhrforum.de/threads/seiko-handaufzug-ende-1960-er-jahre-mit-kaisersiegel-oder-wappen.464567/