found my first silver in my local park about two months into it, two years ago! And have found about thirty silvers since! My theory is just when your about to quit for the day go another fifteen minutes....it really doesn't amount to much but its a theory! Dig all the pull tabs you can, for every 3,245 you dig one will be a gold coin! That's a rough estimate! Its just an all around fun hobby and have great time doing it! HH