I'm trying to identify this Grado cartridge I purchased new in the 90s. I know it has a Blue stylus, but am wondering about the cartridge itself. It appears to be gold in color. I checked with Grado and they said it was a Blue. I also checked with Needle Doctor and they thought it was a Grado Gold or Silver with Blue stylus. I can find no identifying numbers on it. Any help with identification of this would be greatly appreciated!