There are alot of us out there and I hope this becomes a place to share ideas. I noticed recently that a Chalmers '12 touring which sold recently at Bonhams', still has it's original rear entry sill plates. Mine are plain reproductions but it's good to know there is something out there to copy from.
Go to the Chalmers registry Garage to see photos of the car. Contact me through Contact Us or prew62@icloud.com