"Facts are stubborn things; and whatever may be our wishes, our inclinations, or the dictates of our passions, they cannot alter the state of facts and evidence." - John Adams
Several years ago I worked in a retail store, had to run to the bank one morning to get change for the registers. When I got back and was putting the coins in the trays I broke open a roll of nickels and they were all Indian Heads. Two other rolls were the same. Needless to say, had to do another run to the bank. Still have them!
We all know the ol' rule of ten when it comes to finding silver at the end of a half dollar roll, but that doesn't necessarily carry over very well to dimes. Today while searching a dime box, I found a 1952S on the end of a MWR along with a nice surprise in that very same roll: a 1941 Mercury Dime! The box also coughed up a 1964 Rosie before it was all said and done. Looks like the rule for dimes might have be "for every ender you find, you average one merc!"
I got an rosie ender two day ago as well! The first roll I opened (not the ender) had a 1915 silver 50 centimes! I thought the box could epic... but like you pulled another rosie. Still an awesome box tho!