W. Va. Code § 60-8-21: Sale in sealed, labeled packages required.

All wines sold pursuant to this article, except that sold pursuant to the provisions by article seven of this chapter, shall be sold only in sealed packages, bearing such seals and labels as the commissioner may require. A manufacturer of wine offered for sale by any licensee shall attach to each bottle a special label bearing an accurate description of the contents of the bottle in such form and detail as the commissioner may require.