blue painted chi rho painted over ceramic surface

chi rho symbol painted ceramic surface blue earliest forms green christogram chrismon superimposing capital letters greek alpha omega circle christos stroke labarum prechristian times characters christ emperor constantine great shaded shadow heavenly divine coeleste signum dei church history protection military standard christian faith art victory resurrection insignia religious iconography christus christianity religion catholic background christianism spirituality pottery glazed porcelain decorative tradition design tinglazed surface one