Roger DubuisSylvia McElherronApril 19, 2020News Roger Dubuis Excalibur Twofold Combining a trio of world-firsts, the Roger Dubuis Excalibur Twofold limited edition watch exhibits a dazzling white aesthetic by day and an otherworldly glow after dark. Roger DubuisSylvia McElherronApril 19, 2020News