I found these coins today , in about three hours. 30 dimes , 9 quarters, 17 nickels , 60 pennies , 3 Canadian cents , 1 wheat , 2 South Korean coins , at a park and school playground.
check the dates (any silver 1964 and before 905 --- silver war nickles (1943 - 45) --look for the "big mint mark on the rear-- with that many (30) dimes / (9) quarters maybe you got one