28 coins in the same hole and the newest one is a 1920!!!

I was hunting more of the yard that I found the indian and merc in the other day and wasnt having much luck. I figured I would give it another half an hour and then head home to wait on my 8in coil that was to be delivered by ups. As I was walking to my car, I was working the strip between the sidewalk and the road when I got a good penny/dime signal that was reading about 6in deep. I thought it would be nice to at least dig a wheatie before going home and so I cut my plug. When I pull a plug on a target deeper than 5in, the target is usually still in the hole and I have to dig more dirt out of the hole to get to it. So I dug down to about 7in and pulled the dirt out of the hole and put it on my dropcloth. As I was reaching back into the hole to retrieve the rest of the loose dirt, I noticed a penny laying in the spoil pile and then realized there was about 6 of them that I could see! All I could think is "Man these better not be memorials" and picked one of them up to see what I had going. The penny that I picked up was dirty but I could tell that it was a wheatie. I finished cleaning the rest of the dirt out of the hole and soon seen about 6 or 7 more of them in that handfull. At this point I was totally freaking out thinking that I might be digging up a roll of wheaties or something.
I took my sunray and rechecked the bottom of the hole and I was still getting signals down at 8in. I took my digger and cut out a smaller plug at the bottom of my hole as to get the rest of the dirt broke up. As I was pulling the loose soil out of the hole I noticed a big silver laying in my hand with some more pennies. I stopped and gathered up all the coins that I had found and placed them on my clean cloth and promptly filled my hole and called it a day without even knowing the age of or total of my finds. I told myself to wait until getting home to look at what I had!
Once I got home and laid everything out, I could tell that I had a total of
25 pennies, 2 V-nickels, and a barber half. Later while cleaning the coins, I realized that there was 3 indian heads mixed up with all the wheaties and the newest coin being a 1920. Earlier while collecting all of the coins out of the hole, I noticed small pieces of iron and kept the ones I found thinking it was part of whatever held these coins over 85 years ago.
Being that these coins were protected for sometime inside whatever kind of container or pouch until it deteriorated and that they were all laying against eachother, alot of these only took minimal cleaning and most ended up looking pretty nice after some soaking and scrubbing with a plastic bristled brush along with a dremel brush and polisher. This is the biggest group of coins that I have ever found in one hole and to have a barber half in the mix along with two V-nickels made it simply awesome in my book!
The total rundown of all the coins is as follows:
1900-S Barber half
1906, and 1910 V-nickels
1896, 1901, and 1903 Indian head cents
Wheaties were: 1-1911
1-1913-D
4-1916's
1-1916-S
2-1918's
2-1919's
1-1919-S
4-1919-D's
5-1920's
1-1920-D