The caduceus—a staff entwined by two serpents and topped with a pair of wings—was a prominent symbol in ancient Greek and Roman iconography, particularly in relation to trade, diplomacy, and healing. While today it is often mistakenly associated with medicine (due to its similarity to the Rod of Asclepius, which features a single serpent), in ancient times, the caduceus had a broader set of symbolic meanings, all tied to the divine messenger Hermes (or Mercury in Roman mythology).

On ancient coinage, the caduceus was often used as a representation of commerce and communication, reflecting Hermes’ role as the god of trade, merchants, and travelers. The caduceus’s association with commerce made it a fitting symbol for coins, which were central to trade and economic exchange. In this context, the symbol emphasized the importance of business, negotiation, and the safe movement of goods across regions. Its appearance on coins would convey messages of prosperity and the protection of economic activity, aligning with the role of Hermes/Mercury as a patron of merchants and a divine figure who ensured the smooth flow of trade and diplomatic relations.

The dual serpents of the caduceus also carry deeper symbolism. In ancient Greek culture, serpents were often associated with wisdom and renewal, and the intertwined snakes on the caduceus may have symbolized balance and the harmonious union of opposites. The wings, representing speed and swiftness, highlighted the messenger aspect of Hermes, who was able to travel quickly between the mortal and divine realms. This imagery conveyed the power of effective communication and the importance of keeping the lines of negotiation open, both for peaceful diplomacy and for ensuring the success of mercantile ventures.

In addition to commerce and diplomacy, the caduceus also had associations with healing and protection. Hermes, though primarily a god of commerce and trade, was also associated with medicine, particularly in his role as a guide to the underworld, helping souls transition safely to the afterlife. In this context, the caduceus symbolized the idea of protection and balance, ensuring the safety and well-being of travelers and traders, as well as serving as a sign of divine favor and protection in various undertakings. This multifaceted symbolism made the caduceus an appropriate and powerful motif for ancient coinage, where it could be used to signal the importance of commerce, communication, and divine support.