Quoted from 85vett:I have half a dozen hanging on my wall in my game room. All of them are hung the same way. I use drywall screws that go through an already existing hole in the PF at each corner. Hangs flat against the wall and isn't coming off unless you go crazy trying to pull it off the wall.
https://www.lowes.com/pd/Grip-Rite-6-x-1-5-8-in-Bugle-Coarse-Thread-Drywall-Screws-1-lb/4744171?cm_mmc=shp-_-c-_-prd-_-hdw-_-google-_-lia-_-126-_-nailsandscrews-_-4744171-_-0&placeholder=null&gclid=EAIaIQobChMI4Nv76rql6wIV1ZFbCh2EjQ5VEAYYAiABEgJG8fD_BwE&gclsrc=aw.ds
I like this idea so it lays flat. I have a bunch classic stern playfields I am going to hang in my new gameroom and I will probably do it this way.