Was at an antique store today and saw a Gillette razor in its original case. After looking through the site it looks like it was a 1908 Gillette. Question is the razor was dark gray, almost black. Does that mean it's a silver coated razor that is heavily tarnished, or something else? Price was $35 so I didn't get it. Might get it if it would polish up nicely. Wish I had gotten the serial number.