I don't remember in the original data for the Classics if they were advertised as not only a Coin Detector,but Also a Relic detector even at the Frequency of 6.59 KHZ. I lost track of the nickles,bullets,small brass buttons and other types of brass that I have found with my C3SL which has the Mr Bill Modifications.For some reason this thing sure loves Bullets and Nickles! Since it was already Modified when I bought it I can't compare with an Un-Modified Classic 3SL...Only what I have read on the Forums. I always read about Higher Frequency being better for relics and small brass and Nickles. I've had detectors between 5-15Khz and I can't remember finding that many nickles or bullets or small buttons and brass targets with Those detectors.The 2 bullets I found today...22 cal. are very small and the Classic easily nailed them but they were very green from corrosion.I have found some very small brass targets and tiny brass buttons. I wonder why the 6.59 Khz on mine is working like a higher frequency detector or does the frequency really matter that much?! Maybe my Classic is a little hotter with the mods. My ground is about Moderate and a few hot rocks here and there.
RonK
RonK