Dimes In Rolls Of Pennies?

I find them quite often, but in "doses." E.g., my store goes through roughly one $25 box of pennies per week, and two weeks ago I had to take six dimes out of the pennies in my coin changer, plus I found another two on my own (from the same roll, no less--keep that up and I'll get rich!). But this week? Only one, and it was so black I was only able to identify it as a dime after I tossed it in a dollop of degreaser to see if there were even any features under the grime, or if it was a slug. We get our change from Wells Fargo, but I'm not sure what company wraps their change. It's those my-kingdom-for-paper-wrappers plastic shrinkwrappy things, if that helps with ID.

thanks jbuck!!

I have just the opposite problem. I get pennies in my nickel rolls and even my HALF DOLLAR rolls, and they are replacing the other coin, not an added bonus.

found my first in BWR this week 2 rosie's both in same roll

I would guess this happnens for me about once every 5 boxes ... about as frequent as coming across a steel cent!

I have never found a different denomination US coin in a roll. I would say I've been through at least 75 boxes of different denominations.

Hasn't happened to me yet, but who am I to complain? If I want dimes, I'll get dime rolls.

However, this guy on youtube found a Mercury dime in his penny rolls.
See here

Just found 4 dimes in some CWR's.