Santos Dumont Black Large Model silver-dial Ring in sterling silver with

Ring in sterling silver with Double G

Clasp: Folding

which had been developed and launched in 1983 in collaboration with the famed Italian aerial squadron

The “navigation timer” – or Navitimer – was born

Santos Dumont Black Large Model silver-dial Ring in sterling silver withProduct Description: Santos Dumont watch Large model Manufacture mechanical movement with manual winding, caliber 430 MC Steel case with black lacquer Steel beaded crown set with a blue synthetic spinel cabochon Black square decoration dial with translucent lacquer, Roman numerals, steel sword shaped hands, sapphire crystal Case back engraved with the handwritten signature of Alberto Santos Dumont Black alligator leather strap, steel ardillon buckle.