Cal. Business and Professions Code § 21629

The provisions of this article shall not apply to any tangible personal property which has been: (a) Acquired from another secondhand dealer; provided the secondhand dealer selling or trading the tangible personal property states in writing under penalty of perjury, along with a description of the property, on an interdealer transfer form or an itemized bill of sale, that the report or reports required by this article have been properly made and submitted by that dealer. A copy of the form or the itemized bill of sale shall be delivered to the acquiring dealer at the time the transaction occurs. Interdealer transfer forms shall be provided at actual cost by the Department of Justice. The dealers involved in the transaction shall retain their copy of the interdealer transfer form or itemized bill of sale for a period of three years as a matter of record, and shall make them available for inspection by any law enforcement officer. (b) Acquired in a nonjudicial sale, transfer, assignment, assignment for the benefit of creditors, or consignment of the assets or stock in trade, in bulk, or a substantial part thereof, of an industrial or commercial enterprise for purposes of voluntary dissolution or liquidation of the seller’s business, or for the purpose of disposing of an excessive quantity of personal property; or which has been acquired in a nonjudicial sale or transfer from an owner of his or her entire household of personal property, or a substantial part thereof; provided, the secondhand dealer retains in his or her place of business for a period of three years a copy of the bill of sale, receipt, inventory list, or other transfer document as a matter of record which shall be made available for inspection by any law enforcement officer; and provided further, that the secondhand dealer notifies the chief of police or the sheriff that exemption from reporting is being claimed under this subdivision. “Industrial or commercial enterprise” and “owner” as used in this subdivision do not include a secondhand dealer; (c) Acquired in a sale made by any public officer in his or her official capacity, trustee in bankruptcy, executor, administrator, receiver, or public official acting under judicial process or authority, or which has been acquired in a sale made upon the execution of, or by virtue of, any process issued by a court, or under the provisions of Division 7 (commencing with Section 7101) of the Commercial Code; (d) Acquired as the surplus property of the United States government or of a state, city, county, city and county, municipal corporation, or public district and which after requisition or acquisition by the United States government or by a state, city, county, city and county, municipal corporation, or public district has never thereafter been sold at retail; and (e) Reported by a secondhand dealer as an acquisition or a purchase, or which has been reported as destroyed or otherwise disposed of, (1) to a state agency by the authority of any other law of this State; or (2) to a city, county, or city and county officer or agency by the authority of any other law of this State or a city, county, or city and county ordinance. (f) Acquired by persons, firms, partnerships, or corporations who buy, sell, or trade precious metals, whether in the form of coins or commercial grade ingots, who: (1) are designated contract markets by or registered with the Commodity Futures Trading Commission under the Federal Commodities Exchange Act and acting pursuant thereto; or (2) infrequently conduct their business directly with members of the general public. As used in this subdivision, “infrequently” means occasional and without regularity.