Here is a neat new addition to my son Sean's impurity collection. A CD 170.1 Pennycuick with two fantastic tear drop carbon bubbles. This is also a nice opportunity to thank the wonderful collectors who have helped Sean start to put together a nice collection. In particular we would like to thank Rick Hess, Ross Baird, Mike Swanson, Dudley Ellis, Ed Peters, and Doug Williams for their kindness. It is beautiful to see the support young collectors are given in this hobby.