Paving Blocks, Slabs, Bricks, Squares, Tiles And Other Articles Of Pressed Or Moulded Glass, Whether Or Not Wired, Of A Kind Used For Building Or Construction Purposes; Glass Cubes And Other Glass Small Wares, Whether Or Not On A Backing, For Mosaics Or Similar Decorative Purposes; Leaded Lights And The Like; Multi-cellular Or Foam Glass In Blocks, Panels, Plates, Shells Or Similar Forms