I've had some great luck with Goof Off, oven cleaner for oil based paints. Oven cleaner works pretty fast and can spread to adjacent areas that might cause damage, use with caution.
Maybe try a small spot next to that bare metal chip , as a test.
Always start with the weakest solution first. Then step up to stronger solution.
I'd use IN ORDER
1. USE A HOT AIR GUN AND SOFTEN THE LETTERS. FOCUS ON THE LETTERS ONE AT A TIME.
2.simple green first and soften the paint
3. mineral spirits soak 1-5 minutes soften the paint
4. enamel thinner soak same way.
Use a tooth brush as it looks like textured paint..going to make it hard to do completely.
Another option is to simply paint over it with a small texture foam roller using craft paint blended close to the color.
remove the two screws.
Apply it in two localized light coats...
That way you get the texture and exposed chipped paint
so far I used goof off-then rubbing alcohol-then hot water no matter how light you rub it-it goes right to the red and starts lifting the red. I will keep trying as I am not one to leave the name on this radio!
I think trying to remove it will ultimately damage this rare radio far more than leaving it alone. Here is an idea not mentioned, take the radio in for a laser paint match, and touch up the paint to cover the name.