1500
Inc. Duveen Brothers, 1475
Inc. Duveen Brothers, 1662
Joseph E. Widener, 1450
Inc. Duveen Brothers, 1778
Joseph E. Widener, 1400
Inc. Duveen Brothers, 1525
Inc. Duveen Brothers, 1466
Julie Hainauer, 1475
Inc. Duveen Brothers, 1400
Joseph E. Widener, 1510
Oskar Hainauer, 1560
![Francesco I Sforza, 1401-1466, 4th Duke of Milan 1450 [obverse]](https://api.nga.gov/iiif/2969b190-b490-420f-bf2c-9d57f53a2110/full/843,/0/default.jpg)
