Omega Specialties CK 859 Numbered Edition 5220.127.116.11.99.002. 39 mm stainless steel case. Silver Ag 925 dial with small seconds sub-dial at 6 o’clock. Manual Swiss Made. Omega Chronometer Caliber 8926, based on 8910, 30 jewels, power reserve of 72 hours. Brown calfskin leather strap with tang buckle.