I did find plastic material at a radio install shop that matches the grain almost exactly. I just made a plate yesterday to cover the hole left in my old cutout dash.The epoxy is now warming by the fireplace, I'm fixing it right after posting..
69 RA III T/A Auto 69 Sprint vert 3speed ( sold to a new home) 69 350 coupe ( new home in Denver) 69 350 HO 4spd