Detail: Smoothed Bust on front/smoothed deity on back
Cord/Chain: Leather (black)
Closure: Adjustable double slipknot
About these coins:
These are Roman Imperial bronze or copper coins from 27 BCE to around 400 CE.
BCE = Before Common Era and CE = Common Era. If you want to go old school, you can say BC (Before Christ) and AD (Anno Domini). Either way, these coins are anywhere from 1,700 - 2000 years old and would have been around during early Christianity and the Roman occupation around much of the globe.
I love that people outside of the Americas can find hoardes of Roman coins buried literally in their backyards. You can find Roman coins spread across Europe. You can find them in the UK. You can even find them in the Middle East, Asia, and Africa! Those imperialistic bastards really got around.
People would bury their wealth because a) there were no banks and b) people, like those those in armies, moved around a lot (and it wasn't always safe to carry around large amounts of wealth.). Subsequently, if those people died or just forgot where they stashed their goods, those coins remained buried, and many ancient caches are still uncovered nowadays!