Every line above is reproduced from the holding institution’s own catalogue entry, which is linked. Where their title, date or attribution differs from ours, theirs is the one printed here.
The helmet on the floor is not decoration. Antwerp reads it, with the galleys behind, as the badge of Pesaro's command of the papal fleet, and the battle as what earned him heaven.
Venetian commissioners are introduced by their patron saint, usually to Mary and Jesus. Here a living pope does it, Alexander VI, the Borgia, and the saint is Peter, promised the keys of heaven. The flag carries Pesaro's arms and the pontiff's: Santa Maura, taken from the Turks in 1502.
Alexander VI died in 1503, the first year Antwerp gives the picture.
Sources: KMSKA object page · KMSKA object page; The Flemish Art Collection · National Gallery of Art, Washington, Roman 15th Century, bronze medal, c. 1492 · Matthew 16:19, Douay-Rheims (Challoner)
And I say to thee: That thou art Peter; and upon this rock I will build my church, and the gates of hell shall not prevail against it.
Matthew 16:18 · Douay-Rheims (Challoner), from the project’s own corpus at data/bible_drc.js
Printed on demand. Public-domain masterwork, reproduced from a 14,257 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.