A similar cross appears upon a coin issued during this reign in the name of another son of Constantine.
Upon a coin bearing the inscription Constantinus Max. Aug. we see upon the reverse a cross of four equal arms.
On an otherwise similar coin a compound tau cross of four equal arms,
, appears.
Upon a well-known engraving of a coin in the Annales Ecclesiastici of Baronius, the
form of the so-called Monogram of Christ appears upon the helmet of Constantine. Some authorities, however, state that this is copied as the familiar
in error; what appeared on the helmet being the Gaulish symbol