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DescriptionState Flagof the Duchy of Parma, Piacenza and Guastalla (1848-1849).svg English: State Flagof the Duchy of Parma, Piacenza and Guastalla (1848-1849)
DescriptionState Flagof the Duchy of Parma, Piacenza and Guastalla (1850-1851).svg English: State Flagof the Duchy of Parma, Piacenza and Guastalla (1850-1851)
DescriptionState Flagof the Duchy of Parma, Piacenza and Guastalla (1815-1847).svg English: State Flagof the Duchy of Parma, Piacenza and Guastalla (1815-1847)
DescriptionCoat of arms of the House of Gonzaga-Guastalla.svg English: Coat of arms of the House of Gonzaga-Guastalla. Italiano: Stemma nobiliare della