This is the version with Alto C double, fingerings Vicinelli.
I struggled a little to the optimization due to some peculiarity that summed together complicate the system.
The special features are: extremely flattened shape in the lower house, the type of clay (Etruscan), the addition of two sub holes, the hole in the left little finger plays the "Mi" full.
If after drying and subsequent firing, everything will work properly, will send it to Achint.
- [+] Spoiler