E90-1s have plate scratches too!

[Pat R]

That's great Ed. I'm sure no one would be surprised that I'm interested in
this. If you or someone else would like to do some work on this I would
be happy to help.

What I found works best is to make up some sheets like this... ( I made this
in a couple of minutes but it takes more time to make an accurate one)
img899.jpg

Then draw the scratch in like I did with the first Demmitt you posted.
img898.jpg

You can do this with several scratches and as you find new ones you can see if they fit any
of the spots on either side of an existing scratch. The main reason I find this
works best is all the cards are cut different but this will give an accurate placement of where the scratches should be.

The second Demmitt you posted has two vertical scratches so it will probably
be a good one to start with. I just did a quick check and found this Jennings
with two vertical scratches going in the opposite direction of your Demmitt.
E90-1 Jennings.jpg