Personally, being unused to the typical 'clad' type with copper edges, I can't help but to find them extra dirty for whatever reason. I feel the copper edge, that turns brown after a while, is a sign of dirt attaching to coins. The copper trace isn't covering the whole edge either, it's pretty irregular. I'd rather use barrel plated coins such as those in Canada. They feel cleaner and nicer.
"Always assume the lowest in value for best possibilities"