Containers of beer of Puerto Rican manufacture which are to be shipped to the United States must be marked with the name of the brewer; the serial number, capacity, and size of the container; the kind of beer; and the serial number of the withdrawal permit, TTB Form 5170.7, prefixed by the number of such form, e.g., “ 5170.7-17-1.”

[20 FR 6077, Aug. 20, 1955, as amended by T.D. TTB-146, 82 FR 1132, Jan. 4, 2017]