This is a vintage Otto Link Slant Signature tenor sax mouthpiece. This is an original true Florida slant sig with nothing stamped on the shank. It has WT stamped on the side as the factory original special facing designation. That stands for a unique facing by Wolf Tayne when he worked for the Otto Link Co. It is approximately the equivalent to a 6 of this period.
This vintage Wolf Tayne facing Slant Sig is in near mint condition. It retains nearly all of the original white in the lettering and on the oval chain. These Wolf Tayne facing Slants are incredibly rare, and it's nice to see one this well preserved.
This is a great vintage Link that has excellent projection and a true vintage voice.