https://teihipster.medium.com/omega-speedmaster-chronograph-mark-40-automatic-watch-3513-33-mini-review-30fc98594eab

"For 3513 model, it should have 2 version; White or Black dial. I normally like the black dial as other watches I’ve but not for this one. ฺ The white dial is exremely attractive to me, anyway it’s not that really white, a bit silver white and it’s covered by Sapphire glass. The playful red (and black) hands is outstanding and contrast to dial’s colour. Such a good detail, you can even see it’s echoed in the center of chornograph and featuring highly stylized tritium Arabic numbers and black hour/minute hands also have a tritium for glowing in the dark."