Wear a little piece of British Library history, unearthed from our archives! These organic cotton caps feature a reproduction of an authentic Library Stamp, representing a slice of our past and our commitment to a sustainable future. This stamp features the date of 1981, a royal coat of arms, and ‘British Library’ in a scroll motif. Library Stamps – or acquisition stamps – were used for security and in tracing the provenance of collections. Library Stamps – or acquisition stamps – are used for security and in tracing the provenance of collections. Further information on British Library stamps can be found here. This product is printed on demand by our partners Teemill. Product Specification Materials: 100% Organic Cotton Cap with Recycled Plastic Peak, Recycled Polyester Thread and adjustable YKK Metal buckle. Production: DTF printed. For more information here.