I'll check my NOS ones Brian ... it's been a while since I've looked at them, so I can't recall.
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Prince Edward Island
'64 Parisienne CS "barn find" - last on the road in '86 ... Owner Protection Plan booklet, original paint, original near-mint aqua interior, original aqua GM floor mats, original 283, factory posi, and original rust.
I have wondered this too. The old blue hardtop had traces of white on the sport emblems. My convertible none. My nos Parisienne quarter emblems have none?!?!? I have no idea what to think.
I'm thinking that the factory installed ones WERE detailed white......and paint on top of chrome plating doesn't bond very well.....
Most owners...after a few years would have prolly removed what was left of the white paint.....leaving a totally chrome finish there...
I have one NOS piece....and it has NO white paint on it....just red on the Custom part.......so I'm guessing the service parts were left shiny....on the SPORT part