A Greek Bronze Mirror, circa late 4th Century B.C.

The cover decorated in applied repoussé relief with the head of a woman facing left within a guilloche border, and wearing a cloak draped around her shoulders, spiral-twisted penannular earring, and sakkos with dotted lattice pattern and ribbon, her finely modeled face with dotted pupil and incised iris and eyelashes.

private collection, Berlin, circa 1942
Mathias Komor, New York [G.252], 1981

Wolfgang Züchner, Griechische Klappspiegel (Jahrbuch des Deutschen Archäologischen Instituts. Ergänzungsheft; 14), Berlin, 1942, p. 84, KS 139, fig 109 (p. 197)
Agnes Schwarzmaier, Griechische Klappspiegel: Untersuchungen zu Typologie und Stil, Berlin, 1977, pp. 137, 184, and 334, Kat 244
Michael Pfrommer, "Hellenistisches Gold und ptolemäische Herrscher," Studia Varia from the J. Paul Getty Museum, vol. 2, 2001, p. 113, note 119

Very good, hinge missing on cover, decorated surface slightly worn, two holes in hair could be casting flaws, applique head does not appear to have been separated from the disk after initial soldering, back of mirror proper is heavily covered in corrosion products.
In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective qualified opinion.
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For a closely related example see M. Comstock and C. Vermeule, Greek, Etruscan, & Roman Bronzes in the Museum of Fine Arts, Boston, Boston, Massachusetts, 1971, p. 259, no. 372 (acquired in 1903, "said to come from Asia Minor or the Islands off its coast").