Where a mercantile agent is, with the consent of the owner, in possession of goods or the documents of title to goods, any pledge made by him, when acting in the ordinary course of business of a mercantile agent, shall be as valid as if he were expressly authorised by the owner of the goods to make the same; provided that the pawnee acts in good faith and has not at the time of the pledge notice that the pawnor has no authority to pledge.
Explanation
In this section, the expression "mercantile agent" means an agent who has, in the customary course of his business as such agent, authority either to sell goods, or to consign goods for the purpose of sale, or to buy goods, or to raise money on the security of goods.