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Theobald von Oer Selbstbildnis mit Hermann Matthi. Selbstbildnis mit Hermann Matthi Dresden auf Leinwand cm Museum Abtei Liesborn museumdigital de php objekt oges Theobald von Oer PDart Images from museumdigital Museum Abtei Liesborn Theobald von Oer paintings Painters at work thcentury selfportraits of men Selfportrait paintings