I picked up a mint condition driver's side quarter emblem early in my now-10-year restoration. Somewhere along the way I also picked up a passenger side for maybe 10 online. Just this weekend, I came around to tackling that resto. A couple of letters were missing most of the chrome, along with some from the cougar. Several spots were also missing the black background. I gently removed the three pressed-on brackets, then removed the plastic c-o-u-g-a-r and cat.
I learned the best way to scrape off the back paint was with a razor blade. From there, I proceeded to use a qtip and nail polish remover to remove any extra crap from the backside of the plastic. I bought a can of chrome spray and sprayed enough to puddle inside the cap, so I could use my daughter's finest brush. Went to work detailing, letting the chrome dry a bit, then used the razor again to scrape off excess. More qtip and remover, then used satin black in its cup and a fine/wide brush on the background. I filled all the letters with black as safeguard. As final seal on the backside of the plastic, AND to the pot metal, I used my handy dandy dap clear silicone. It's what I used with my old emblems when the knobs were all busted off.
I also repeated the black on the mint emblem with silicone. Has anyone been successful soldering replacements where those piddly studs broke off? I had three on each, but with the resto piece I noticed one was bent beyond use, so with slight force to right it it went snap.