ChicagoJohn said:
Even I found few 1970's coins at 7 inch deep..... park added some new soil and grass! Forget that park that no way to find deeper older coins!
You never know whats buried and how deep in those old 'turn of the Century' parks. For an area to have potentially deep coins, it has to have a rich history.
This site has been pounded over the years. Even met a few detectorists while i was out there.
I've searched this site off and on for two years. Pulled over 50 silver coins and a few silver rings out of it including a bunch of Barbers. The first year i searched it (2012), i pulled out 39 silvers including a bunch of Barber Quarters, dimes and a Barber Half. A lot of mercs also. So many wheats, i quit counting them.
Most of those coins were found in the higher ground of the park and were relatively shallow with an average depth of around 7-10 inches.
After a few detecting sessions towards the end of that first Season, i walked away with only a few clads and sometimes with nothing at all but junk.
I declared that park finally hunted out.
Fast forward to last year. I had a gut feeling there had to be more in that park with such a rich history.
Up to that point i only lightly searched the area of the park which tapers off to a swampy area. Lightly because of the iron junk density. An iron target just about every square foot sometimes more forced me to use a small coil.
The soil was also extremely heavily compacted hard to dig. I was sure the iron and compacted soil scared off a lot of detectorists from that area. At that time i only found shallow clads down to around 5 inches.
Decided on a different strategy. Went back with my NEL Tornado coil for depth, TTF and open mask. Long story short, pulled out another 15 silvers, a few Indians and a couple Barber dimes and one cool Model T type key fob medallion. Just about all those coins were anywhere from 10 to over a foot deep. The old auto key fob medallion was around 14 inches.
Here's the clincher, there were shallower clads back to 80's and then there was a 10+ inch deeper layer coins going back to the WWII era and earlier with
nothing in between. No 50's, 60's or 70's dated coins found.
One layer of shallow clads down to 5 inches, then nothing until around a foot deep can only mean one thing, the area was heavily filled in at one time in the past. The fill also confirmed by the city worker i ran into while detecting there. That fill area also just happens to be the infield to the outfield of a baseball diamond still used today for little league practice.
Once in a while a lot of research, talking to city/park workers, trying different strategies, gut feelings and dogged persistence does pay off.
Now after two years searching that site, after pulling out many hundreds of keepers, i can finally say that site is now hunted out!
Naah! NEL BIG, another new coil, 4TF, MTF, smooth on/off, recovery fast on/off, deep off/on, trash/no trash, etc. etc.
