Grailium - Omega Megaquartz 4.19MHz marine chronometer No. 377, made in 1980s for French Navy “Service Hydrographique et Océanographique de la Marine”. Developed specifically for the French navy which chose it for
OMEGA, MARINE CHRONOMETER MEGAQUARTZ | Important Modern & Vintage Timepieces | Geneve, November 8,2020
Omega Megaquartz | La Clinique Horlogère, Service et vente de montres, Porrentruy, Jura, Suisse