Looks like I was wide of the mark in my estimation then. If you had given us more info from the C24 listing, such as the actual case number instead of the papers for another watch altogether we have have had more to go on!
I too can't find a watch of that case number without the Officially Certified text and the gold versions do seem to have the Om Swiss Made OM text so you may be right in your initial suspicions about the dial. €5K is a lot to pay for a watch which is suspect IMO. Might be worth trawling through Desmond's web resource to see if anything like this is pictured on there.