Italy 2020 - 75th Anniversary of United Nations Organization Stamp

Italy or Italia issued a nice, warm UN-blue stamp with United Nations emblem at the top and official UN75 logo in the center.

Italy/ Italia - 75th Anniversary of United Nations Stamp - 2020

The denomination of the stamp is denoted by letter B and is probably valid for zone 3 postage.

I still wonder what's the denomination value of this stamp. Can anyone help?

Complete list of Postage Stamps issued on the same theme by other countries can be seen by clicking the link. 

"75th Anniversary of United Nations Organization 2020 - Complete List of Postage Stamps"