A person who has possession of property owned by another, and also the power to cause title to that property to be transferred to a third person without any further action on the part of its owner, and who exercises such power, is a retailer when the party to whom title is transferred is a consumer. Tax applies to his gross receipts from such a sale.

Pawnbrokers, storage men, mechanics, artisans, or others selling the property to enforce a lien thereon, are retailers with respect to sales of the property to consumers and tax applies to the receipts from such sales.