Once the Tiffany Studio's patent on the process of copper foil expired in 1904, other companies quickly put this new technology to work to bring affordable leaded art glass shades to the marketplace.The 149A is reproduced from the 1913 catalogue of the R. Williamson & Co. of Chicago. In fact, all of our 2-1/4" fitter mosaic shades - 154A, 197A, 166A, 128A, and this one - were pictured on the same catalogue page together. Leaded mosaic shades suit a variety of antique lighting styles, from Early Eclectic to Arts & Crafts to Colonial Revival. See more shades with a 2 1/4" fitter. Specifications Item # 149A Fitter 2.25" Width 4.5" Height 5" Finish Art glass Price As Shown Base Total $34.00 Grand Total $34.00