I posted this question on the italian web-
http://www.agraria.org/ :
Are they growing around of Vesuvio likewise the old varieties of tomato ( Fiaschella, Re Umberto and Patanara) or only Principe Borghese ?
The answer:
are grown only that it is difficult to find the seeds xchč every farmer jealously guards them
should be in possession of a little hanging cherry tomatoes and retrieve the seeds
The moderator Eugenio- he live direct in the area of Vesuvio ( San Giorgio Cremano)
Vladimír