Tiffany, New York, USA. Favrile iridescent or iridized art glass salts in a circular form with ruffled edges. Each marked “L.C.T.” along the underside, and four with a “Tiffany Favrile Glass Registered Trade Mark” label affixed along the underside. Each; height: 1 1/8 in x diameter: 2 5/8 in.