The Amarna letters (Campbell 1960) date roughly around the mid-fourteenth century B.C. and the Uluburun shipwreck (Fawcett and Zietsman 2012) dates from around 1300 BC. The timeline of the two are close enough to warrant some discussion on their possible linkages. Any such existing linkages may bring clarity in our understanding of the importance of gift exchanges in the Middle East and Mediterranean in the 2nd and 1st Millennium BCE.
The Amarna letters can be considered as historical evidence when it comes to understanding the importance of gift exchange in the Late Bronze Age