Santos de Cartier Black Adlc Steel Large, wrist watch

in steel and adlc, 39.8 mm square case, series n. 4072162444BX - ref. WSSA0039, black dial with Roman numerals and date window 6 o'clock, sapphire crystal, crown with faceted black spinel, mechanical movement with automatic winding, caliber 1847 MC, original rubber strap with interchangeable steel folding clasp, additional leather strap, both the straps are equipped with the "QuickSwitch" interchangeability system, complete with box and papers, never worn