Thanks for the reply.
I am familiar with Gemtrim/jewelite/silvatrim products...
This is a 1.5” x 1.5” extruded angle that looks as though it’s been formed to the shape of the
sign face with heat.
I just don’t know the plastic used PVC/acrylic or otherwise.
Most recently encountered it on a steel art built oval Tim hortons face.
We’ve done the same thing using aluminum but I feel as though the plastic would be much easier to form to the shape.