Hidden Michelangelo Buonarroti drawing goes on display in Rome

ARTDAILY
Michelangelo Buonarroti, Sacrificio di Isacco, 1530 circa, matita nera, matita rossa, penna (recto), matita nera (verso), mm 482 x 298. Firenze, Casa Buonarroti, inv. 70 F.
ROME---A newly-discovered drawing by Renaissance master Michelangelo, found during the restoration of his "Sacrifice of Isaac", has gone on show in Rome, along with another drawing found by restorers 30 years ago. Restorers painstakingly working last year on the "Sacrifice of Isaac", a biblical drawing executed in black pencil by the Florentine artist in 1530, found a hidden sketch for the same scene on the back. It was when restorers removed the cardboard that they discovered the secret sketch by the Italian sculptor, painter and architect who was famed perhaps above all for his frescoes on the ceiling of the Sistine Chapel in the Vatican. [link]