At the very least this makes author's watch rather less unique and custom than described. Perhaps it was an one of a kind back in 2020, but it's not anymore.
The cost is around $9K.
¹ since then they also have a collection of non-customizable watches
² this undersells it a bit; most O&J watches (like mine!) are "just" customized realizations of a set of basic designs (which is a good thing, IMO, because those designs work better than what most buyers would come up with). But many of those designs were developed collaboratively in response to specific customer requests. I was in the workshop in 2018 and saw an early prototype of what became the day/night watch (https://www.ochsundjunior.swiss/watches/day-night/) in development for the customer who had proposed it. If you skim through their blog, you'll find lots of interesting projects done for customers with varying degrees of customization (I really love this day/night done with no conventional face: https://www.ochsundjunior.swiss/dirks-day-night/)
I guess they now own and can continue to sell that design. They've gone all in on online customization at least: https://www.ochsundjunior.swiss/customizer-1-1/?watch=112&cu...
I love their timepieces.
This is not a hand-made watch. It's just bespoke made to his specification and he never states its unique and limited edition 1 of 1.
This does however make it incredibly custom as stated as he gave the specifications, and the company made it for him, literally customisation I'd say!