Did I finally find a GEM?

[Dick]

Hi guys,
I picked up a '49 coupe recently and was told I was the third owner. So a few questions from those of you that know please,
Are these floor mats and the trunk mat original?
the floor under the mat is clean and black as is under the trunk mat...is that original. The door panel seems original? The underbody is red oxide color every where...is that original? I can't find any indication of metal repair or repainting underneath. The engine runs like a swiss watch. Instant starts, quiet, smooth &
25lbs oil pressure idling warmed up, 50lbs going down the road. (had to have been rebuilt at some point.
Your input is appreciated!
Thanks
Dick