Lightning A copper plate etching showing Roman augurer or interpreter of omens and prophecy
Chi Rho [Chi Rho/PX]
Roman symbolism Constantine's labarum
Constantine's labarum, a standard incorporating the wreathed Chi-Rho, from an antique silver medal.
Coin of Magnentius with large Chi-Rho at ecliptic angles and including the Alpha and Omega.
A coin of Constantine (c.337) showing a depiction of his labarum spearing a serpent.
Coin of Vetranio, a soldier is holding two labara. Interestingly they differ from the labarum of Constantine in having the Chi-Rho depicted on the cloth rather than above it, and in having their staves decorated with phalerae as were earlier Roman military unit standards.