So the previous owner had this one on his German firetruck, driving in the Netherlands.
"You will get a big fine when you drive around with a blue lightbar" he said, so he decided to buy a bottle of spray paint and the rest is history...
Your gonna have to treat this as a dome restoration project.
Wetsand the paint off. Then up the grit count until you finally buff it out and give it a nice polishing.
I had to do this with some Aerodynic domes that some *derp* spray painted black.
Thanks guys, first side finished! I can skip the gym with this one! Some white paint is still there, but it's very hard to reach, i actually used a toothpick! (work flow: 500 grt / 1200 grt, 2500 grt, commandant 4 and finished with some wax)
Nr 2 finished! 2 hrs Horizontal 1200 grid works better, (tip: first one i build up from 400 to 2500, 400 is way to low, both horizontal and vertical made some scratches and it's really difficult to buff them out.)
Next in line, chromed speaker grill with sticker residue from the past...
@Mars Light yes they are the same, its the shadow effect..
meanwhile a nice before and after frame photo. Its a always a rewarding experience cleaning aluminium.
I use magic eraser sponges on my '61 Oldsmobile Starfire white convertible top and whitewalls to keep them sparkling bright...never thought of using them on aluminum as well! The Starfire has 4" aluminum trim from stem to stern--a nightmare to keep bright!!