Genuine Seiko Black Bezel Insert For 6138-0030 / 0040 Bullhead Chronograph

If you're restoring a classic Seiko Bullhead chrono (like the 6138-0030 or 0040), this is the bezel insert you've been hunting for.

It's a genuine Seiko piece in black aluminum.

Now, it is pre-owned, so it might have a tiny bit of character from its past life—maybe a light mark here or there—but it's fully intact and ready to snap into place.

It's the little details that make a vintage watch pop, and this original bezel brings all that retro cool.

No UPC, just pure Seiko heritage for your Bullhead.