Keywords: Piero della Francesca - Ritratti dei Duchi di Urbino Federico da Montefeltro e Battista Sforza - detail -04.jpg between 1465 1466 Tempera on panel size cm 47 33 each Institution Uffizi object history credit line accession number WGA link 17628 http //www wga hu/art/p/piero/4/montefe4 jpg http //www wga hu/html/p/piero/4/montefe4 html PD-old-100 painting portrait Italian 1451-1500 Double portrait of the Dukes of Urbino R0 WGA form painting WGA type portrait WGA School Italian WGA time period 1451-1500 1460s portrait paintings |