This is a very unique cast metal Fafnir Industrial Units sign. It measure 21" x 18" and appears to be mostly cast aluminum. i'm unsure as to what material the brown part is. There is some damage around the edges, and the top layer of the letter "N" is not securely attached. The hanging mechanism on the back also needs to be repaired. You will probably never see another piece of advertising like this again!
Please see all photos, and contact me with any questions before purchasing.