27 C.F.R. § 19.280 Signs.
Title 27 - Alcohol, Tobacco Products and Firearms
The proprietor shall place and keep conspicuously on the outside of his place of business a sign showing the name of the proprietor and denoting the business, or businesses, in which engaged. (Sec. 201, Pub. L. 85–859, 72 Stat. 1355, as amended (26 U.S.C. 5180))
Title 27: Alcohol, Tobacco and Firearms
PART 19—DISTILLED SPIRITS PLANTS
Subpart I—Construction, Equipment and Security
§ 19.280 Signs.

