and
were also made use of by Constantine.
Which form of solar wheel, monogram, or cross, was that actually carried by the Gauls in triumph within the walls of Rome and set up by their leader in the heart of the Eternal City, is not quite certain. But it is clear that as
both the
and the
appeared upon coins struck before our era, Constantine cannot very well have been ignorant of the fact that these were originally Pagan symbols, when he favoured the addition of a loop to the top of the vertical bar of the Gaulish solar symbols