Deb's sewing basket

The new Arkansas license plate design features a diamond celebrating the Mufreesboro mines, but?

there is also a double helix-looking holographic image running vertically through the diamond. Does anyone know what this symbolizes?

It’s an anti-counterfeiting feature found in the reflective sheeting of some states’ license plates – a 3M product called the “3M Ensure Virtual Security Thread”.

Mod-7 Lec-5 Design of a Plate Girder