[Healeys] Concours question BN2 Air Filters

[Michael Salter]

I'm restoring the air filters on my low mileage BN2. The front and
back plates of the filter assemblies are still painted with the
original green hammertone paint but there is absolutely no evidence of
green paint anywhere on the perforated grille which covers the filter
elements.
As far as I can tell these appear to have been unpainted mild steel.
Does anyone know for sure whether these were painted?

M