What you need to get is a headlight to body seal for a 56 - 66 VW sedan because that is what your headlights are. The VW part number is 111941191 and they come from Asia/China 
and Germany 
Most VW parts places have them, or you can see what's available from Bugcity.
https://www.bugcity.com/shop/s...query=headlight+seal
There are two different versions available that I know of (three, if you count Danny's "C" shaped version). One is "L" shaped, the other (and better) design is "T" shaped. The "T" is placed around the outside of the chrome trim ring and up against the body/paint such that the top of the "T" is flat against the body with one side of the leg of the "T" up against the trim ring.
The "L" shape goes around the trim ring with the flat bottom of the "L" tucked under the trim ring. Yes, they're a PITA to get on there and you may have to fiddle with the tab at the top of the headlight bucket in the body to make everything fit right, but that's how they work.
SoCal VW, CIP1 VW and others have these besides Bug City, but you may encounter other designs (like Danny's). They're called a headlight outer seal - body mount.
Good luck.