G. Vallardi (L. 1223, the mark in both sizes), his number 'N14' (verso) in red chalk
Lot Essay
Similar copies after Michelangelo by Allori are in the Uffizi, S. Lecchini Giovanni, Mostra di disegni di Allessandra Allori (Firenze 1535-1607), Florence, 1970, nos. 5, 11 and 13, figs. 2, 8 and 10