Omega Constellation Chronometer Quartz, circa late 1970s / early 1980s. Rectangular “TV screen” stainless steel case, silver linen dial with applied Roman numerals at 12, 3, 6 and 9, black inner bezel ring. Signed Omega quartz chronometer movement. Original integrated Omega stainless steel bracelet with signed Omega clasp (marked OMEGA / STAINLESS STEEL / 1394/916).
The Constellation is Omega’s chronometer line — the designation was awarded only to watches that passed official rate certification.