Egypt. Alexandria. Hadrian, 117-138. Drachm. (Bronze, 33.40 mm, 25.57 g). Dated RY 21 = AD 136/7. Bare bust left with drapery on right shoulder. Rev. Serapis enthroned to left with Cerberus at his feet; LK A (date) across fields. Dattari 1837. Geissen 991. Emmett 1030. RPC III 6197. Brown-green patina. A little bit of corrosion on reverse. Third specimen known. Very Fine. Ex E. P. Nicolas, Maison Platt, Hotel Drouot, 09.03.1982, lot 438. Ex Frankfurter Münzhandlung, Auction 156, 04.11.2022, lot 390. This drachm belongs to the rare and special Alexandrian series featuring nude, uncrowned imperial portraits on the obverse, a topic studied and addressed by the present writer in a paper at the XV International Numismatic Congress in Taormina in September 2015 (see: Giovanni Maria Staffieri, ‘I ritratti senza corona sui bronzi imperiali Alessandrini’, in ‘XV INC Taormina 2015, Proceedings, vol. II, pp. 787-791 + 12 figs., Rome- Messina, 2017). The obverse portrait of Hadrian, well-centred, superb in style and exceptionally facing left, displays a series of distinctive features (especially the shape of the nose and an unmistakable hairstyle) along with the nude bust, which allow us to state that all obverse dies were the work of a single and recognizable master engraver whom I have named the ‘Master of the bare-headed Hadrian’, the author of this high-quality, exquisitely engraved and preserved drachm.