This book presents a little-known and ingenious artefact of the Roman world: a small puzzle padlock whose font plate bears a face or 'mask' of 'Celtic' style. The padlocks were designed to secure small bags or pouches and their distribution extended across Europe with the majority found in the Danubian region and in the vicinity of Aquileia. The authors examine the cultural context, the origins and uses of the padlocks, and provide detailed solutions...