SJ Production Steel Case .New Watch Franck Muller RM3 FM Launches Grand Central Tourbillon With Central Tourbillon .Franck Muller presents a new tourbillon watch, the Grand Central Tourbillon, distinguished by its unique central tourbillon structure, which makes the slowly rotating tourbillon the visual focal point of the dial.The Cintree Curvex barrel-shaped case has been redesigned with slender and smooth lines, with the crystal extending from both ends to the lugs, creating a more spacious and open dial. The case is crafted from carbon fiber, featuring delicate textures; the black and gray stripes of the carbon fiber create a subtle quality that is both captivatingly elegant and abstractly casual.The lacquered dial is paired with strikingly large Arabic numeral hour markers, with a guilloch
