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Carl Gustaf Hellqvist Valdemar Atterdag Holding Visby to Ransom Google Art Project. NM Nationalmuseum Painting cm False Nationalmuseum Object valdemaratterdagholdingvisbytoransomcarlgustafhellqvist Valdemar Atterdag Holding Visby to Ransom Oil on canvas Hellqvist Valdemar Atterdag brandskattar Visby special urlid rAGxQxmMByBg