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In page Hürrem Sultan:

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In her first short letter to Sigismund II, Hürrem expresses her highest joy and congratulations to the new king on the occasion of his ascension to the Polish throne after the death of his father Sigismund I the Old in 1548. There was a seal on the back of the letter. For the first and only time in the Ottoman Empire, a female sultan exchanged letters with a king. After that, although Hürrem's successor Nurbanu Sultan and her successor Safiye Sultan exchanged letters with queens, there is no other example of a sultana who personally contacted a king other than Hürrem Sultan.[i][citation needed] She pleads with the King to trust her envoy Hassan Ağa, who verbally delivered another message from her. Some sentences of the letter sent to Warsaw by Haseki Sultan are as follows: