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Baksida av gregoriansk kalendarium perpetuum Skoklosters slott .tif LSH artwork Erik son Bergbom sv Rubrik CALENDARIUM PERPETUUM samt religsa deviser Sign Ericus Erici Bergbom Inv del fec Holm Kalendern bestr av ett frmre pappersark med tre luckor bakom detta pappere en furu platta med fem utskruna hl fr tre rullband av papper