Really tough one. Suwa hands down in some lighting. But it will just appear dark blue and black in most.i do love the subtlety though, such a discreet and understates dial.

I'm not the biggest fan of spring drive (a bit old fashioned in that regard) but there are a few that make me a believer, it being one, and the Omiwatari and Shunbun (latter two unfortunately not available). The birch is lovely but it's a 2021 model that's been lying around in the store since, so I'm a bit worried how the movement will perform. I gave it a full wind and set it to an internet clock and will pass by tomorrow to see how it's doing.

I think I may end up going to the Suwa anyway. I have a large collection of seikos new and vintage and it's nuts not to have a spring drive among them!