What color is the coin - copper, silver or brass? Based on the inscription it's from the U.K. Assuming copper color ... Great Britain Penny or Half Penny ... in this condition it's worth less than a dollar.
Approximately $1-$2
It's not a centurion. It's the goddess Britannia, who is (sort of) the British counterpart to our Miss Liberty You didn't give the coin's denomination, and that design was used on both half-pennies and pennies. If it's a half-penny it's worth about $1-3 depending on how worn it is. If it's a penny it's worth $2-6. The inscription is heavily abbreviated Latin that translates roughly as George V, By the Grace of God King of All Britain, Defender of the Faith, Emperor of India. Variations on that motto appear on ALL British coins so it's not an identifying feature.
I am unaware of any British Empire country that uses the Peso as its currency. The inscription is Latin, but abbreviated. The expression "GEORGIVS V" identifies the reigning Monarch of the period, in this case, King George V. It does not identify the country or the denomination of the coin. "DEI GRA BRITT OMN REX FID DEF IND IMP" means "By the Grace of God, King of all the British territories, Defender of the Faith, Emperor of India".