Brilhart 3-band Alto Sax Ligature
This mouthpiece has the plastic reed plate and the knobby screw heads. It is not marked as Brilhart anywhere, but it is Brilhart.
It looks to me like it was gold plated and part of the plating has worn off.
Drop me an e-mail if you wish to buy it. I will calculate shipping, USPS Priority Mail, insured for the full amount, and then I will e-mail you a PayPal invoice