Most model engineering / railroad suppliers and the better stores have 1/16" or 3/32" round head rivets (or the nearest metric size) in brass or copper - most suitable for headbadges !. Failing that Nick at H Lloyds in the UK sells them cheap.
> From: Chris Beyer <beyerc@mailserver.volvo.com>
> Date: Fri, 13 Oct 2000 13:51:22 -0400
> To: classicrendezvous <classicrendezvous@bikelist.org>
> Subject: [Classicrendezvous] Headbadge Rivets?
>
> Hey, Y'all:
>
> Anybody have a source for the little rivets to hold on a metal
> headbadge? The one on my Falcon is loose, and I know Crazy Glue is
> gauche.........
>
> Thanks,
>
> Chris Beyer
> Balmy Bloomfield, NJ