Hot Rods 1946 Ford Fender Skirts

How can I tell if these are original, or reproduction fender skirts?

 

Should have mentioned, they are steel. Just curious, because I have a guy interested in them, and wanted to let him know.

 

I believe those are Foxcraft , I had them on my old 44 1/2 they have the shape of a 41/48 skirt with the lip of a 51 Merc, they are nice looking skirts
Here’s my old car