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Crucifix of John II Casimir. Artwork en Amber Crucifix of John II Casimir pl Bursztynowy krucyfiks Jana II Kazimierza Amber Ivory wood velvet metal foil Moscow Kremlin Armoury en The altar was in the possession of John Casimir who after the truce of with Russia in Andrusovo donated it to the Tsar The Tsar has also received an amber