The imagery is linked to the iconography of Zoroastrianism, the state religion of the Sasanian empire, the last Persian empire before the early Muslim conquests from AD632. Scientific analysis shows that the silver from which it was made came from a mine in modern-day Iran. https://www.theguardian.com/science/article/2024/sep/01/amazing-viking-age-treasure-travelled-half-the-world-to-scotland-analysis-finds