They are 100 AD and one of them, the one with the diadem on it, is scarce.
The oldest coin I ever found was a US shield nickel, and that was in pretty rough shape. I have never been overseas, so I haven't had a shot at the really ancient stuff from the cradle of Western Civilization.
I found a pottery making site once, where there were little balls of fired pottery clay, shell tempered, and a pretty common material in the local native pottery. The other piece I found in that bunch was a 'squish' where someone had just squished some pottery mixture and thrown it into the fire.
I could see a couple of people sitting by the fire, shooting the breeze and idly rolling bits of clay into little balls and throwing them in, and finally getting bored and squeezing the last bit and throwing it in too...
A few years later, working on an archaeological crew in Virginia, one of the crew sat on a large, flat rock, that just seemed like a good place to sit. As the rock was shaped, the comfortable way to sit was facing almost due north. They scuffed their feet and literally kicked up a pile of flake debris.
Needless to say, a grid went up, and the site was excavated. Among thousands of flakes from toolmaking were the halves of three broken bifaces (stone tools worked down, but not completed), and an odd half.
In one of the squares, to the west of the north/south line the other half was found, about 30 feet out.
('Rats! That's the fourth one I broke today!')
The guy who found the other half, sat on the rock and under the watchful eye of the crew, threw that broken half of that biface--and it landed back in the square. (Apparently, the thrower was right handed, too).
While not of "great religious significance", the look on the faces of the team in the field school was neat as they realized that these had been people, subject to the same wants, frustrations, needs, and desires as any other people down the ages; that immutable earthly force, human nature still applied.
After that, they looked at their surroundings with a new eye. Where would I want to camp? Where would be a good spot for a village? What trail would I take? and we had a great season.