There's a local park close by that I enjoy hunting. This year I've managed to find some silver coinage, jewelry and one gold ring, plus a good share of modern clad. The natural top soil in the park is fairly shallow so most coins are no more than around 4" deep. In this park there are 20x50 foot strips of lawn that border most parking areas. And like most they have there share of share of pull tabs, tabs, foil and bottle caps.
I've always thought of myself as pretty much a dig every thing kind of guy, but the truth of the mater is, it doesn't take more than an hour or so and I start avoiding (don't dig) anything that doesn't ID visually or audibly as a possible coin.
Now to get to the grist of the mater: Today I decided to "attack", if you will, one of the fore mentioned parking strips and dig anything and everything that gave me a solid and consistent AUDIO response regardless of what the Visual ID indicated. I think the results speak well for themselves beings the area has been hammered by others. For me to completely clear the approximately 20x50 ft. area of all solid and repeatable audible targets took about 2 hours. Not shown amongst the many junk items in the wire colander are 6 zinckers and 2 modern nickels that were also dug.
My settings for the F5 were: gain 40, thresh 6 and disc 15. Tones were at d3 but d2 would have worked just as well under these conditions for obvious reasons.
FWIW, the smaller ring VID'd as a nickel and the large one VID'd as a pull tab. Incidentally, inside its band the smaller ring is stamped 18K.
But the larger ring is marked "DO NOT SELL MADE OF COPPER"! 
HH
I've always thought of myself as pretty much a dig every thing kind of guy, but the truth of the mater is, it doesn't take more than an hour or so and I start avoiding (don't dig) anything that doesn't ID visually or audibly as a possible coin.
Now to get to the grist of the mater: Today I decided to "attack", if you will, one of the fore mentioned parking strips and dig anything and everything that gave me a solid and consistent AUDIO response regardless of what the Visual ID indicated. I think the results speak well for themselves beings the area has been hammered by others. For me to completely clear the approximately 20x50 ft. area of all solid and repeatable audible targets took about 2 hours. Not shown amongst the many junk items in the wire colander are 6 zinckers and 2 modern nickels that were also dug.
My settings for the F5 were: gain 40, thresh 6 and disc 15. Tones were at d3 but d2 would have worked just as well under these conditions for obvious reasons.
FWIW, the smaller ring VID'd as a nickel and the large one VID'd as a pull tab. Incidentally, inside its band the smaller ring is stamped 18K.
But the larger ring is marked "DO NOT SELL MADE OF COPPER"! HH
Thats a great find! 
