Lot Essay
The presence of wings in the hair suggests that Mercury was intended, and indeed the god was the most common subject for herms. However, it has been proposed that these janiform heads could be the brothers Sleep and Death-- Hypnos and Thanatos to the Greeks and Somnus and Thanatus (also called Mors or Letus) to the Romans.
For the unfinished surface compare the portrait of Domitian in the Getty Villa, no. 35 in E.R. Varner, ed., From Caligula to Constantine, Tyranny & Transformation in Roman Portraiture.
For the unfinished surface compare the portrait of Domitian in the Getty Villa, no. 35 in E.R. Varner, ed., From Caligula to Constantine, Tyranny & Transformation in Roman Portraiture.