Both are yellow gold. Can I post the links on here? I added the pictures just in case.
The one with the lume is listed by a German dealer for 12.9k (no original box etc.), the other one (second picture) is listed for 17.9k. When I look at the case and lugs from the cheaper one, they aren't as sharp and crisp as the ones in your pictures. And the side of the case doesn't look polished either but more brushed.