Zenith – Moon phase and full calendar, dark blue dial Period: 1980s Movement: Swiss quartz Functions: Small seconds (sub-dial), moon phase, directional bezel, date, day, month Case: Gold-plated, steel Case back: Steel Case diameter (excluding crown): 39 mm Very beautiful metal bracelet, though unmarked. Mineral crystal shows a few scratches; these are visible in the photos. I am unsure if the crown is original; it is unmarked and does not screw down. For further details, please examine the photos carefully; they are part of the description. Shipping via FedEx courier.