Front radiator grille speed nuts?

[ozriley]

Currently working away on my radiator grille. There was some rust on the bottom bracket that holds the vertical chrome strips to the bottom of the shell. The strips are held to the bracket by a particular design of speed nut which slides over the top of the chrome strip in order that it can be clamped with the retaining screw. Some of these are broken.

I purchased some proprietary speed nuts, however, they are of slightly different design. They are joined on the two outer edges, whereas the original speed nuts have a center join.

Are these available new? Or does anyone have some good secondhand ones they would sell?

Thanks,

Scott