I have been looking since the 1970's, and to this day have never scored a silver coin in my pocket change - with the possible exception of a war nickel(s) back in the day which weren't considered "keepers" much like 40% silver halves.
About 5 silver quarters for me in change in 5 years. A silver Rosie this year.
Many silvers since I first started checking change in the mid 1970’s as a teen.
I remember the occasional 40% or 90% silver Kennedy.
Its why all my purchases today are cash transactions.