1950s Universal Geneve Triple Calendar Turquoise Moonphase 21520An absolute striking 1950s Universal Genve Triple Calendar Turquoise colored Moonphase reference 21520 mid size 35mm with an outstanding no lume silvered dial. The 1950s Universal Genve Triple Calendar Moonphase reference 21520 is a quintessential example of mid century Swiss watchmaking elegance and mechanical sophistication, combining a triple calendar (day, date, and month) with a moon phase display in a refined stainless steel case that likely