CD 104 [020] Pennycuick with an out of round Continuous Drip (CD) base. This has an open bubble / cavity that runs in varying degrees about 75% around the skirt just below the wire groove. Its hard to picture exactly but I can take some more upon request. It also has numerous champagne type fizz bubbles as well. There are some annealing stresses in the threads up in the dome and wire groove that look to be part of manufacture. Small open cavity on the outer crown as well that is also part of manufacture. Nipple at the top of pinhole. Crude piece. $30.00 with free shipping. First email!