u/Extension-Pilot-4846

Hi guys I’m having a bit of trouble picking a watch from my collection that will go with a full black suit and shirt with a pink tie, Any opinions would be very much appreciated thanks.

Pretty bad photos as I’m buying from a reseller but can any experts tell what grade this shitter is ?

I’m getting these black marks on my wrist with the warm weather. Is the just some sort of residue from the pins etc ? What should I do to fix this.