Private collection, Florence; (Sestieri, Rome);[1] (Heim Gallery, London); purchased 1970 by NGA. [1] See the letter of 5 March 1974 to Douglas Lewis from A.S. Ciechanowiecki of the Heim Gallery, in NGA curatorial files. According to the Heim Gallery index card file of objects sold, an Algardi St. Matthew, no. W6842-5, was sold to a Dr. Sackler, with no further information given (Getty Research Institute, Heim Gallery Records, Box 105).