Which deity served as the primary 'mascot' of commerce and marketplaces in Ancient Rome, appearing on coins, market entrances, and merchant ships?

Throughout history, ancient civilizations used specific symbols, figures, or deities as 'mascots' to represent their marketplaces and trading activities. These early brand mascots were believed to bring prosperity and protect commerce. They appeared on everything from shop signs and coins to market entrances and trading vessels. How well do you know these ancient commercial symbols that were the predecessors to our modern brand mascots?

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Mercury (Hermes), with his winged sandals and caduceus staff
Janus, with his two faces looking to the past and future
Fortuna, with her cornucopia of plenty and wheel of fortune
Minerva (Athena), with her owl of wisdom and olive branch