Neolithic or early Bronze Age man.

copper based alloy, Phosphor bronze ;)

Because it had a ring to it..Bronze Age, Iron Age etc.

I am not sure but to get it out you take an old toothbrush and put some toothpaste on i and scrub! I it sounds like I am an idiot telling you to scrub your ring with toothpaste but trust me it works soo well!! Good Luck!

I have NV and 8 stamped inside my 3 joined rings and they're bronze, silver and gold in colour, someone told me it stand for either Nevada Silver or the ring size for countries such as Australia.