This is a very vintage Otto Link Master Link mouthpiece for tenor, serial number S80. It was recently refaced and opened by master mouthpiece technician Erik Greiffenhagen. It was originally stamped a No. 3 but now is opened to .092”, or the equivalent of a 6-6*. The rails, table and tip are all looking very pristine. Physically the body of the mouthpiece is in very good condition. The bite plate was recently replaced and is in good working condition.