She is dressed as a queen — ermine, a crown of pearls and precious stones — and the colour around her is not decoration. Three blue cherubim stand for purity and air; six red seraphim for love and fire. This is the right half of a diptych and the man it was made for is in Berlin: Étienne Chevalier, treasurer to Charles VII, kneeling with Saint Stephen. No document records the commission. Dendrochronology and style put it near 1450, which is as close as anyone has got.
Printed on demand. Public-domain masterwork, reproduced from a 8,627 px master of the original. The whole image is printed — never cropped to fit the sheet — so every sheet carries an archival margin, and the dimensions and resolution listed above are the ones you receive.