$50 Confederate Bill - Grade Request

Because this is the first confederate bill I've attempted to grade I would like some idea of how these notes are different with respect to the traditional grading process used on more modern currencies.

I heard that it is better for these types of bills to feel softer rather than crispy. This one feels softer with the texture of almost and extremely thin piece of notebook paper. I'd like to know what the general consensus is out there regarding this. It would also be nice to have a website with pictures that address these types of bills and their grade states.

Grading paper money solely from images is a real challenge. I would ballpark the grade somewhere around Fine-Very Fine.

How do the experts here even know it's authentic?

Well, the above statement comes from the website and it appears that the serial number for this bill does not appear on the list which is good.

This is a very informative site and I wonder if the TPG's also use it? I'm still curious about the printed items and the texture of this type of paper insofar as how it ages over time etc. Confederate notes' texture seem to be generally somewhat different compared to other bills etc.