It’s a given that the luxury and the contemporary-art worlds make for compelling bedfellows, especially since high fashion and street style first merged a decade ago. That tipping point unleashed a horde of imaginary characters from underground culture into the field of fashion—and it wasn’t long before high-end watchmaking got in on the game, too. U.S. artist Kaws (real name Brian Donnelly) has featured his “Companion” character in numerous collaborations with streetwear and fashion brands alike. With its odd name and x’ed-out eyes, Companion is paradoxically both appealing and vaguely threatening, which makes it rich meat for street fashion. Here, however, Kaws wanders into lofty—and expensive—new territory with perfect replica…