_Coin of Carausius._--A brass coin has lately come into my possession,
bearing on the obverse the head and inscription:
"IMP. CARAVSIUS. P. P. AVG."
And on the reverse, a female figure, with spear and a branch:
"PAX. AUG. S. P. MLXXI."
I believe it to have been struck by Carausius, an usurper of the end of the
third century, and my Query is as to the meaning of the letters MLXXI. Some
friends assert them to be the Roman numerals, making the year 1071, and
conclude it to have been struck at that date.