Vintage Longines Art Deco Tank, Ref. MZ5712, Champagne Dial, Quartz from 1980'sThis vintage Longines ref. MZ5712 is a dress watch from the late 1980s a period when Longines was producing some of its most elegant tank pieces. Clean, flat, and deliberately understated, it is exactly the kind of vintage Swiss timepiece that wears well today without looking out of place. The 23x33mm rectangular case carries the characteristic proportions of Longines' Art Deco inspired line. What makes this example particularly desirable is the