PenWorks
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Here is some of the new Penturners Choice Crushed shell from CSU. I always liked the original cracked ice, in what use to be called Decora, but that disappeared from the suppliers about 4 years ago. Many pen manufactures use material very simular to this as well. So here are some samples. If you note, the Wall Street I made about 5 years ago, I pulled this from inventory when I found out the cracked ice was not available any more, so this went into my personal collection. Notice the material is more pearly than the new crushed shell. Thanks for looking 
L-R Jr. Sts, Stipula Da Vinci, Wall St(original Decora materail) & Churchill.

L-R Jr. Sts, Stipula Da Vinci, Wall St(original Decora materail) & Churchill.