The originals are flash chromed which gave them a mirror finish for the text, the modern repro ones come out a frosted silver, you could try and use the chrome paint (proper soft chrome, not the rattle can stuff)
The front can be shined up with wet sanding with 1000grit on a flat surface
Yes .. One completed paint over from the back with black paint to protect itAm I correct assuming chroming or paint is applied from the backside
Kevin
\Yes .. One completed bosint over from the back with black paint to protect it