The watch, with a stainless steel case, black striped dial, and distinctive luminous markers, was commissioned in the mid-1970s for the royal family of the Sultan of Oman and bears the nation's emblem on the dial. Self-winding automatic movement "Technical notes" Beautiful and extremely rare dial (fewer than ten pieces in the world) with the coat of arms of Oman, the traditional curved dagger called "Khanjar," which appears in the official coat of arms of the state, accompanied by two crossed swords like the one printed on our dial. In addition to the rarity of the dial, we have a splendid example of the Nautilus ref 3700/A001 with a 42 mm case and a thickness of 1.76 mm. The case is constructed in just two pieces: a monobloc steel case back housing the caliber 28-255 c (calendar) with a middle case also carved from solid steel, attached by two hinges to the case back shoulders with four screws and a single hole for the split crown shaft, which, once mounted, makes the watch water-resistant to 120 meters. The bracelet, known by collectors as a "wide bracelet," has a final measurement of 16 mm near the clasp. The word "Swiss" is written under the hour marker at 6 o'clock, surrounded by two sigma letters indicating the presence of precious metals on the dial (applied tritium hour markers and white gold hands). Dots (small dots) and the characteristics of Type 1 dials. A watch. A legend.