Anonimo introduced the San Marco Dino Zei at Baselworld 2007. The movement is certified by the COSC with a 24 hour GMT function. The case is made of a non-magnetic stainless steel with a sand-blasted finish. The case is an impressive 46 mm wide and 52 mm tall. Not sure how much it costs, but you can find more at Anonimo.

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Here is a really nice watch from Anonimo called the Militaire Zulu Time. It is a GMT automatic watch with a sand blasted stainless steel case. The case is 43 mm in diameter and may not be that big, but they say the watch case is very thick. The watch features a patented crown vanishing locking device that is integrated with the watch strap. Manufactured and hand finished in patented Kodiak process calfskin to allow for extended immersion in fresh and sea water (up to 24 continuous hours). The Zulu Time from Anonimo is available for $4600 here.