Only found 13 coins out of six boxes of halves, 11 40% and 2 90% all in the same box. I think the days of easy money are over. I have noticed since the price of silver has risen my findings have gone down.
It is a matter of luck and persistance. You may have "fished" out all the local silver and new stock hasn't appeared. One lucky guy at my local coin club in Southern California found 179 silver halves at the bank this past month! That's over $1000 worth in silver! This is after many YEARS of finding little to nothing at the same bank, so again, luck and persistance. The down economy means some folks are cashing in their change jars, and some have silver halves in the mix. Another lucky scenario might be when a hoarder passes away and the heirs take all the coins to the bank to deposit. Of course, if one or more tellers are wise, they will snatch it all up, so that is another element of luck.
There has been as much silver being put INTO circulation than it has been pulled out, if not more. People are either looking for cash and throwing away old collections or they simply don't care. To those people, a dime is a dime, a quarter is a quarter. Keep trying! I have yet to strike it rich in coin roll hunting
I still find an average of 2-4 40% halves per $100 box ... but some have none, few have more than 3-4. But I always turn them in at a different bank ...