Here is an unusual Star with a projection of a part of the pinhole into the dome. You can put your finger up into this cavity. Appears to have been made mechanically versus a trapped air bubble. Has a lot of micro bubbles in the dome. This is a shotgun mold...so a small insulator relative to the CD 102s. $18.00 plus shipping. Will combine shipping on multiple purchases. Jim White Indyblanc@aol.com