usually silver or gold. but it doesnt matter. its just like US coins
The color only mattered as far as what the coin was made of. Bronze was worth less than Gold not because it was that color but because it was made of that metal.
a Roman coin
That is a very tough question to answer. There are several denominations of Roman bronze coins, so for that, I would need more information on the coin.
See: Roman currency
what color were th =e roman aqueduct
There was no such thing as a 60 asses coin. The most valuable Roman coin in 211 BC was the denarius, which was worth 10 asses.
2018
It is not known.
its got the stuff on it
Yes but you probably won't get much for it. Generally Roman coins go for $50 to $100 USD. A coin specialist can tell you specifics.
2018
Sestertius, Sesterce