I've had a soft spot for the Omega gauss one for a while; why does it have it a lower RRP than a standard Aqua Terra? Is it because it is not Master Chronometer certified?
Any reason to buy the gauss one over a standard one? Aren't they all stated to have the same anti-magnetic resistance?
It’s based on the previous AT model (date at 3, vertical stripes on the dial), and as you say not METAS certified as far as I can tell. Part of the METAS / master chronometer spec is resistance to magnetism so yeah, all the newer AT models have the same >15,000 gauss spec as that model.
https://www.hodinkee.com/articles/a-rolex-milgauss-an-omega-greater15000-gauss-and-a-4000-gauss-neodymium-magnet