A brewer may transfer beer without payment of tax from one brewery to another brewery belonging to the same brewer (a) in the brewer's packages or (b) in bulk containers, subject to limitations and conditions as may be imposed by the appropriate TTB officer. The brewer shall mark, brand or label containers as provided by subpart J of this part.

(Sec. 201, Pub. L. 85-859, 72 Stat. 1389, as amended (26 U.S.C. 5414))