Citizen - Scuba Diver - model no. GN-4-S - Men - 1990-1999 - Catawiki
Identification] Hello, I received this watch from my grandpa but I don't know what it is, its a Citizen GN-4-S-11H, with Eco Drive written on the box : r/Watches
Vintage Promaster Citizen 3740-E70014 Y Divers 200m GN-4-S - Etsy
Citizen VEGA GN-4-S Diver Watch Day Date 100m Water Resist Rotating Bezel | WatchCharts