In 1290, Emperor Andronicus Palaeologus responded to a petition from Spanish merchants, represented by consul Sir Dalmain Suner, by issuing a golden bull that granted them significant privileges. This document allowed merchants from regions such as Parezalona, Ragusa, Catalonia, Mallorca, Valencia, and Tortosa to settle in Constantinople and engage in trade freely. They were assured protection from harm and oppression, with specific provisions concerning import and export duties. Additionally, it safeguarded their goods in the event of maritime emergencies. This decree aimed to enhance trade relations and provide security for the merchants' interests.