A few years ago I received a old tenor from one of my mom's friends. It is pre 1970's because on the original case it says 1964 Band Compendium. (or something along those lines.)
Here are a few facts:
It is unmarked
It is made in Italy
Serial # = 10785
Mother of Pearl inlaid keys
Pretty scroll work depicting a "fan" and "leaves"
Much heavier than the new Yamaha at my high school
Came with a white mouth piece (I'm pretty sure it's the original one)