Imperial Glass-BROKEN COLUMN BOWL-Smithsonian Institute Imperial Glass Broken Column Bowl for Smithsonian Institute An authentic handcrafted clear glass bowl reproduction for the Smithsonian Institute made by Imperial Glass.  In the Broken Column pattern first made by Columbia Glass in 1880,  the 8 1/2" diameter bowl is 3"  deep. The bowl is marked with an IS to identify it as a Smithsonian Reproduction. The bowl is in excellent condition with no chips, cracks, flakes or breaks to note.