27 C.F.R. § 19.605 Additional marks on portable containers.
Title 27 - Alcohol, Tobacco Products and Firearms
(a) In addition to the other marks required by this part, portable containers (other than bottles enclosed in cases) of spirits or denatured spirits to be withdrawn from the bonded premises: (1) Without payment of tax, for export, transfer to customs manufacturing bonded warehouses, transfer to foreign-trade zones or supplies for certain vessels and aircraft, shall be marked as provided in 27 CFR part 28; or (2) Tax-free alcohol shall be marked with the word “Tax-Free.” (b) The proprietor may show other information such as brand or trade name; caution notices and other material required by Federal, State, or local law or regulations; wine or proof gallons; and plant control data. However, marks or attachments shall not conceal, obscure, interfere with or conflict with the markings required by this subpart. (Sec. 201, Pub. L. 85–859, 72 Stat. 1360, as amended (26 U.S.C. 5206)) [T.D. ATF–198, 50 FR 8464, Mar. 1, 1985, as amended by T.D. TTB–8, 69 FR 3829, Jan. 27, 2004]
Title 27: Alcohol, Tobacco and Firearms
PART 19—DISTILLED SPIRITS PLANTS
Subpart R—Containers and Marks
Marks
§ 19.605 Additional marks on portable containers.

