@misc{Piber-Zbieranowska_Marta_Pieczęcie_2020,
 author={Piber-Zbieranowska, Marta},
 volume={58},
 editor={Institute of History of the Polish Academy of Sciences},
 copyright={Creative Commons Attribution BY-ND 4.0 license},
 address={Warszawa},
 journal={Studia Źródłoznawcze},
 howpublished={online},
 year={2020},
 publisher={Instytut Historii im. Tadeusza Manteuffla Polskiej Akademii Nauk},
 language={pol},
 abstract={The article presents the seals used by Duchess Anna Radziwiłł of Mazovia, the widow of Konrad III the Red, during her regency on behalf of her underage sons, Stanisław and Janusz, in 1503–1518. Seven seals are presented, including two previously unknown signet seals belonging jointly to the duchess and her sons, from the short period of their co-rule (1517–1518). The description of each seal contains information on their shape, dimensions, images and inscriptions together with their chronology and examples of use. The practice of using different types of seals (a personal of Duchess Anna, an armorial seal of the deceased duke, signet seals) is analysed, which resulted from the specificity of regency.},
 type={Text},
 title={Pieczęcie księżnej mazowieckiej Anny Radziwiłłówny z czasu jej regencji na Mazowszu w latach 1503–1518},
 URL={http://www.rcin.org.pl/Content/152651/PDF/WA303_187542_B88-SZ-58-2020_Piber-Zbieranowska.pdf},
 keywords={Anna Radziwiłłówna, Duchess of Masovia, 1476-1522, Konrad III, Duke of Mazovia, 1448/1450-1503, Mazovia (Poland ; region) - history - 1138-1526, seals (numismatics) - Poland - Masovia - history, Duchess Anna Radziwiłł, Konrad III the Red, Duchy of Mazovia, regency, signet seal, armorial seal, royal sigillography},
}