la différence entre le 861 et le 1861 Oméga c'est quoi?
Omega Speedmaster Chronograph Professional Caliber 861 42mm Hesalite Vintage Year 1976 Speedy 145022-76 ST | Sansom Watches, Rolex, Breitling, Omega, and more
Omega Speedmaster Premoon ref 145.022-68 calibre 861 circa 1968
Omega Speedmaster Professional cal. 861 – Manila Watch Society
Omega Speedmaster Professional 145.022-78 Moonwatch 1980 Archive Falling R Cal 861 | Value Your Watch
Omega Speedmaster Professional Cal.861 1971 | Vintage Watch Centre
Omega Speedmaster Moonwatch “Pre-Moon” Caliber 861 Manual Wind | Value Your Watch