A Herm (herma) is a male torso on a column with his genitalia at the appropriate level. The form originated in ancient Greece and was adopted by the Romans (hermae became mercuriae). Herm amulets are rare

Herm 1
Herm 1

Blue glaze pierced for suspension H 2.8
Ptolemaic-Roman Period
Art market

Herm 1

Blue glaze pierced for suspension H 3.3, W 1.4
Ptolemaic-Roman Period
Sotheby’s New York, ‘Antiquities’ part of lot 245
7 December 2001

Herm 1

Blue glaze
H 3.8, W 1.5, D 0.9
Roman Period
Museo Egizio #S. 19502

References

1None, Unpublished amulet