Hallo,
is this original Helvetica font, please?
Many thanks
Martino.

Helvetica  Suggested by henriavecunk 

Based on the slighly more condensed "c" and "o" I would say this is the 1957 Helvetica Normal/Regular/Roman.

This font is original Helvetica or not please?

Ok, yes the 1957 Helvetica is the "original Helvetica". Which was based on Akzidenz-Grotesk from 1896.

My font is the original Helvetica and Helvetica Roman is the similar font?

Most probably. The other Helvetica is called "Helvetica Neue"

Thanks Henriavecunk