The applicant shall keep a copy of the approved TTB Form 5100.31, including an approved photograph (both front and back) of the distinctive liquor bottle, on file at his premises. If TTB Form 5100.31 is disapproved, the applicant shall be notified of the appropriate TTB officer decision and the reasons therefor. The applicant importer is responsible for furnishing a copy of the approved TTB Form 5100.31, including a photograph of the distinctive liquor bottle, to Customs officials at each affected port of entry where the merchandise is examined.
27 C.F.R. § 27.204
Sec. 201, Pub. L. 85-859, 72 Stat. 1374, as amended ( 26 U.S.C. 5301 )