Martin Kaldenbach (German, Frankurt am Main 1480–1518 Frankfurt am Main), Jakob Stralenberger, 1506. Oil on linden panel, 40.8 × 28.1 cm; Frame: 64.2 × 52.2 × 7 cm. Städel Museum, Frankfurt am Main (1739). Photo: Städel Museum, Frankfurt am Main.

Martin Kaldenbach (German, Frankurt am Main 1480–1518 Frankfurt am Main), Sliding Cover with Stralenberg Coat of Arms, 1506. Oil on linden panel, 28.6 × 27.7 × 0.7 cm. Historisches Museum, Frankfurt am Main (X03330). Photo: Historisches Museum Frankfurt, photo by Horst Ziegenfusz.

'Hidden Faces: Covered Portraits of the Renaissance' at The Met until July 7, 2024