Omega Cal. 470 - Screw for friction spring for sweep second pinion 2602
Omega caliber 1022 sweep second pinion part 7217 - Omega
Omega Speedmaster Black Sweep Second Hand | Vintage-Speedmaster
Sweep Seconds Pinion, Omega 570 #1253, Height 5.20mm - Gleave & Co. Watch Parts UK
Omega bounces back with reverse sweep of TNC | GMA News Online
Lot - TWO MAN'S OMEGA WRIST WATCHES: vintage Omega automatic with round gold dial, sweep seconds, Omega automatic movement, and Speidel band; Omega quartz with rectangular black dial, goldtone case and bracelet.