The San Marco Alarm is one of Ulysse Nardin's quiet oddities, a mechanical alarm wristwatch from a brand better known for its marine chronometers and astronomical complications. The 38mm steel case runs two crowns, the second one arming a mechanical alarm that strikes on a gong inside the case, a genuinely rare complication and the whole point of the reference. The silver guilloche dial is worked in the classic San Marco style, applied Roman numerals over a textured field with the day and date built into the layout. Turn it over and the caseback carries the embossed Lion of San Marco, the emblem that gives the line its name, over a self-winding automatic movement. This one is a watch-only example on an alligator strap, the kind of overlooked mechanical piece that rewards a collector who already has the usual suspects. It sits among the more characterful entries in the Ulysse Nardin catalog, a proper horological conversation piece rather than another three-hander.