'64 Build Sheet carbon sheet or ??

[Paul_S]

Just wondering if anyone might have an idea what this may be and if there is a better way to read it. I found this carbon copy (carbon side down) under the original carpet on the passenger side of my Norwood '64 and when I hold it up to the light I can just make out a body code. Attached is a phone pic as found. At one time it was over the floor plug (can see the marks) and at some point it moved back right in front of the seat. It looks as though most of the details may have been rubbed out from passengers.

Could this be all that's left of a built sheet carbon copy that was "ringed" to the carpet for build identification? I did find a small ring stuck in the padding near it which could have been holding the sheets there.

Thanks for any info, Paul