A tag having an integral locking ring for attachment to a bottle neck with a perimetrical undercut thereabout. The tag includes a housing having upper and lower portions, a retaining device and a cable tie. The housing is formed by an upper housing portion and a lower housing portion that defines an interior. The housing portions have corresponding openings therethrough and corresponding notches that form a passage into the interior. The retaining device is located inside the housing and has an aperture that is adjusted by tightening the cable tie. After the neck of the bottle is inserted through the openings in the housing and the adjustable aperture of the retaining device, the cable tie is tightened to seat the retaining device in the undercut of the neck and secure the tag to the bottle. The housing can also provide support for an electronic security and/or identification device.