Grand Seiko 4520-7000 in stainless steel and with white linen dial.
There are actually three – possibly four – different vintage Grand Seikos all with the reference number 4520-7000.
I have previously posted both the cap gold cased version, and also the steel cased version with the (very) dark blue dial.
Claims are made for a black dialed version, but I am not convinced yet that this truly exists. There are redialed ones out there, but the blue version is so close to black, that I think possibly people confuse them.
Picked this one up for a song. Sure, the dial has some light staining (that looks a lot worse in this very carefully lit photo compared to what you would see in normal use), but just check out that case. Wonderful.