Near as I can figure it then, we've been able to deduce the following:
- The "T" marked cup is Part #7131077.
- It is completely possible to find Chorus and Triomphe equipped with this cup, given that the part number was shared.
- The "T" does not stand for "thin cup." It doesn't translate into Italian, and it doesn't explain how you would mark a "thick cup" if it was in English.
- It does not mean a triple cup; the part number is for a road double.
- There is less threading on the non-"T" marked cup.
-Kurt