Rota (papal signature)

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The rota is one of the symbols used by the pope to authenticate documents such as papal bulls. It is a cross inscribed in two concentric circles. Pope Leo IX was the first pope to use it.

The four inner quadrants contain: "Petrus", "Paulus", the pope's name, and the pope's ordinal number. The pope's autograph or motto is sometimes inscribed between the concentric circles.

A rota was also used by monarchs for the authentication of documents and diplomas.^[a]

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