Circle of Guglielmo della Porta (fl. 1534) Design for the tomb of a bishop of the Paci family, with subsidiary studies of entablatures (recto); An elevation and two ground plans for a choir (verso) inscribed 'Deposito di Casa Paci' and with letters A to E relating to the architectural elements (recto) and with inscription 'coro della oservanza/ della oservanza fuori' (verso, partly cut) black chalk, pen and brown ink 7 x 3 7/8 in. (17.7 x 9.7 cm.) CHRISTIES