I was looking at this Hydroconquest the other day.
https://www.ebay.co.uk/itm/283832167574
Bezel lume pip looked too big and serial number partially obscured on case back. Engraving on the bracelet also looked laser etched, or at least too shallow. I asked the seller about these points and if they could provide any assurance that it wasn't a fake. Unsurprisingly I received no reply. Seems like there are a lot of fake Hydroconquests around so take care.
I notice the same seller is also now selling a Tissot but don't know this model well enough to comment...
https://www.ebay.co.uk/itm/283838322691
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