The Valjoux 72
By: xyz123abc : June 27th, 2020-10:32
In Rolex numeration caliber 727 is a true beater. You find it in watches ranging from Certina to Patek Philippe. A few technical data: 13 lines (30 millimeter) beat rate 18.000, power reserve 48 hours, Breguet hairspring 17 jewels, kif Shock absorber. Adj...