Vintage Late 80s World Time Casio W-50U. : r/casiovintage
Vintage Casio W-50U 643 Mens Digital Watch Rare Black Retro | WatchCharts
FS. Casio World Time w-50u rare vintage digital watch new old stock NOS | WatchCharts
Casio W-50U 1985 World Time | WatchUSeek Watch Forums
Casio] My A500WA-1 that I've had for over a year now and my father's old W-50U (sadly the upper spring bar broke off around 20 years ago and damaged the watch case) :