It shall be unlawful for any person engaged in the business of a pawnbroker to buy any property of any kind, or receive the same as a pledge, which property is distinctly and plainly marked as being the property of any person other than the party offering to sell or pledge the same, unless the party offering to sell or pledge the same shall show satisfactory evidence, in writing, that he is the legal and lawful owner of the property. Failure to require such written evidence shall be prima facie evidence of guilty knowledge on the part of the pawnbroker, his agents or employees, that the party offering to pledge or sell the same is not the rightful owner thereof, and shall be sufficient cause for the revocation of the license of the pawnbroker by the city council, after a public hearing. (Ord. 365, 11-4-1963)