Since last Monday I've been hitting my "old farm house lawn" here in upstate New York using my CZ-6a picking up a few keepers. This lawn has been gone over by your truly three or four times using other detectors. The best coin previously found was a 1910 Canadian Dime with a Tesoro BandidoIIMM. This last so far I came out with: 1907 & 1899 Barber Dime, 1907 Indian Head penny,,a 1837 Large Cent and another coin which is soaking in oil that looks like a Vermont or Connecticut Copper from the 1700's. I hope to post some pictures in about a weeks time . That CZ-6a is sure a fine unit.