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=245  ##$aMS 1443, olim: F, 427, 765, 866, 1008
=300  ##$amanuscript of polyphony, $c413 x 278
=340  ##$dpaper
=592  ##$aOne watermark is Briquet #1048, another resembles Briquet #7088, other watermarks unidentified
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=774  ##$w1000001435
=774  ##$w1000001436
=852  ##$aNL-L$cMS 1443$eGemeentearchief, Archieven van de Kerken$x383
=856  ##$uNA$zNA