Here's one from my batch of uncleaned coins that I ordered a few months ago. I've soaked it and scrubbed it, and this is probably as good as it will ever be. I have it pegged as a coin issued under Emperor Vespasian between A.D. 69 and 79, probably a bronze dupondius. I can tell little else about it except that after it was lost, some Roman slave must have hit it with the rototiller a couple of times.
It is very convenient (yes...perhaps a little *too* convenient...) that the only letters legible on it are the VESPAS of the emperor's name.
I can make out no details on the reverse.
As poor as its condition is, it's now the oldest coin that I have.