This Dome is Slightly Tapered. Diameter near the top is about 10 3/4 inches.Exterior Height on the Base is 24 inches. Base Diameter is 13 3/4 inches. Estate Fresh on Bostons North Shore. _gsrx_vers_811 GS 7.0.9 (811). The item "X XL Antique Display Dome Free Blown Glass 23 x 11 Clock Doll Taxidermy Cloche" is in sale since Monday, November 20, 2017. This item is in the category "Antiques\Science & Medicine (Pre-1930)\Medicine\Surgical Tools". The seller is "hieronymus3" and is located in Salem, New Hampshire. This item can be shipped worldwide.