This is a ligature for a tenor saxophone. It's a Yanagisawa Yani-Nicchan. I believe it was originally gold-plated (GP), but after years of use, only the screw part retains its plating. Also, there's quite a bit of surface rust overall. I've been storing it since I updated my ligature a while ago. I'm selling it now as part of a decluttering effort. I don't think there are any problems with its use, but the appearance isn't great. Please feel free to comment if you have any questions.