Wicked looking snake! This is the fist Moc/Cottonmouth I have seen as a cast. (I live in a very small world.) Fantastic job on the pen and well done on casting the blank.
I used to think the coral snake pen posted long ago was my favorite snake pen, until now! That really looks nice. Not overloaded with color or crazy patterns, just simply elegant!
Tubes for the Statesman Jr. are the same diameter and length as the Junior Gent II, and Retro pen tubes. You can use any of those kits in tubes sets for Junior Gent (Or Junior Statesman.)