Kris,
I experimented with plastic coin holders for a PSK. Look in the photo gallery for what I did. It was posted in April of 2008. The coin tube used the U.S. Quarter-sized one; about 25mm in diameter.
Shameless plug intended.
My $.02
Edited by MoBOB (06/03/10 01:22 PM)
Edit Reason: Added photo date
_________________________
"Its not a matter of being ready as it is being prepared" -- B. E. J. Taylor