This collection of essays considers the concept of connoisseurship afresh by investigating its practice in familiar places, such as Western art history, while also incorporating a global perspective with Chinese numismatics and walnut collecting, wine and coffee expertise, the market for geological specimens, and the resonances between Morellian connoisseurship and modern forensics. These essays resonate with one another in surprising ways and create new dialoguesabout connoisseurship's meaning and application, demonstrating that its practice can be both intuitive and scientific.