Bare bright is the top copper grade and the one worth the most per pound. It is clean, uncoated, unalloyed copper wire thicker than 16 gauge, with no paint, solder, corrosion or insulation. If you are stripping wire, this is what you are working toward.
Knowing which grade you actually have is the difference between getting paid well and getting paid the mixed rate.
Tell us what you have and we'll give you a fast, accurate quote. A photo of your material helps most.