Hi Alessandro, welcome to AlfaBB. Consider posting the chassis number when you look for information about a specific car.
'63 2600 Touring Spider (AR 191437, the car that started the 2000/2600 International Register, reassembly in progress)
ex-'65 2600 SZ (AR 856043, resto project)
Maintainer of a 2600 SZ register (not the Dutch one).