Hi guys. Quick question. I'm helping a friend put together a lecture on Catiline and obviously the Porcian laws are a big deal. My friend pointed me to the wikipedia page for the Porcian laws where we found this text:

This [the first] Porcian law of 190's BC stated that a citizen of Rome could escape death by voluntary exile. The third Porcian law extended the right of protection and appeal for the Roman citizen outside Roman city limits and throughout the military districts. This is indicated by numismatic evidence in the form of a Roman coin that was minted in 104 BC or thereabouts.

I researched these laws about ten years ago as the intended topic of my MA thesis - that didn't go anywhere (I wrote on Roman headhunting instead), but I'm pretty sure I'm right in remembering that we don't actually know the content of these laws. Am I mistaken on that point? And what is this coin of 104 BCE? I searched the ANS database for it but the description is so vague... nothing noticeably relevant popped up.