The town is said to have been founded by Tarquinius Superbus in 495 BC. The following is the only type of coin struck in Signia.
| SNG ANS 115 | Signia, Latium (central Italy), AR obol or hemilitron. ca 280-275. 0.69 g. Head of Hermes (Mercury) right, wearing winged petatos, caduceus before head, dolphin on neck / SEIC beneath mask composed of the head of Silenus left and a boar's head right. BMC 1; Sambon 164; SNG ANS 115; Rutter HN Italy 343. | Text | Image |
| See also: | Search for Signia at CoinArchives.com | ||
| Entry for Signia on the Digital Historia Numorum | |||