Simple 80's sign enuff-znuff
I use the small picture hangers for the signs just center and screw them on, they seem to work the bast and are cheap for 100 on amazon.
Hangers: https://www.amazon.com/dp/B07L2NSJ2B?psc=1&ref=ppx_yo2ov_dt_b_product_details
The author marked this model as their own original creation.