1963 Dart sail panel emblem question

Hey all,

I am in the process of getting my 63 dart 170 ready for paint and had a question. When I got the car it had already been partially disassembled. Both of the 170 emblems from the panels behind the rear side glass had been removed. One side had one barrel clip still installed.

My question is this, was there originally one barrel clip and one nut, or was there 2 barrel clips holding the emblems on? I am thinking 2 barrel clips as access to remove the nut would be difficult to impossible once the headliner was installed. If this is the case does anyone know the correct size of the barrel clips so I know I am ordering the correct ones?

Thanks in advance.

I have NOS emblems to put back on so I can't look at them to see if they were threaded on one side from a nut or not