I'm new to coin roll hunting. I've been collecting coins for about 3 years, but have just started coin roll hunting. Myself and a friend have been buying rolls of quarters and dimes from local banks in hopes of finding silver. I have spent $380 in the last 3 days from 3 different local banks. I haven't specifically asked for CWR's but i guess the tellers know what I'm doing and have given me rolls with hand folded ends, not BWR's. My question is: is there just a very small amount of silver coins in still in circulation and I haven't looked through enough rolls or am I persuing a futile effort?