was, like the

cross and the many varieties of right-angled crosses of four equal arms, first brought into prominence as a Roman symbol by the Emperor in question.

From the evidence at our disposal it would appear that Decius was the first Roman ruler

to make use of this form of the so-called Monogram of Christ. Anyhow, as has already been remarked, this symbol

occurs upon a coin of the Emperor Decius struck at Mæonia about A.C. 250; and therefore more than half a century before the days of Constantine. And it is noteworthy that it was as a Pagan symbol that the

thus first appeared upon the Roman coinage.

The coin in question is a bronze one, and the "Monogram of Christ" occurs in the centre of a Greek inscription surrounding a representation of the Sun-God Bacchus; and, apparently, as an amalgamation or contraction of the two Greek letters equivalent to our R and CH, viz.: the Greek letters Ρ and Χ.[50]