French School, from Burgundy or Amiens?; formerly attributed to the Flemish School, to the School of Picardie – Mass of Saint Gregory (La Messe de Saint Gregoire) Part 2 Louvre

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“French School, from Burgundy or Amiens?; formerly attributed to the Flemish School, to the School of Picardie -- Mass of Saint Gregory (La Messe de Saint Gregoire)” - Part 2 Louvre