Period Correct License Plate Frame

[BrokenHero]

Does anyone know where to buy a thinner, period correct late 60's license plate frame? Not a vintage dealer frame, but the plane chrome/stainless steel kind that would have been on a 1968 Charger in the late sixties and seventies. Or did people usually go frameless? Trying to go for an authentic, clean look.

The older style frames are thinner, but I've only been able to find four hole frames and it seems second gen only use the top two holes.

Thanks!
Ted