John I had Halidbrands on a 33 tudor and chopped 37 flatback Ford in the 80s.
I ordered a set of 15x8 front wheels for the 37 new from Halidbrand's shop in (San Diego/El Cajon) the late 80s.
After waiting a couple months they called me to pick up my wheels.
When I was at the shop I was commenting about the uneven polish job on the wheels.
It was shiny but had valleys and peaks you could see and feel.
The Halidbrand employee related that is was part of the character of the wheel.
He said the wheels had so much porosity it was up to the wheel polishers to remove the surface porosity and polish the remains.
I liked the wheels but didn’t care for the porosity is character pitch.