I finally found a CD 120 KCGW to compare to the 102.3 NN's. Note that the two greenish ones are identical up to the lower wire groove. Now the blue one has a larger base diameter, but still has the KCGW blot out. Maybe there was a KCGW CD 120 on steroids that they made it from - like the larger than usual CD 134 KCGW blotout that Mike Green had recently on eBay.