Italian Literature - Science topic

I remember reading many years ago (perhaps more than 40 years ago) that Antonio Gramsci wrote somewhere about the time awareness of workers who originated from Sardinia. According to my vague memory, he argued that Sardinian workers had more loose time awareness than workers who grew up in Torino and its suburbs and it reduced their labor productivity.

Does someone know where Gramsci made this kind of argument? If possible, I want to know the exact argument he made and the circumstances of this argument. It is possible that I read it someone's paper other than Gramsci himself.

How popular are Hegel's ideas in the USA? Can we say that his influence on Communism indicates his being marginalized in American philosophical circles?

What literature, philosophy, cosmology, etc. did Bruno read?

Is there a record of his library?

Who was part of Bruno's intellectual circle?

Are there archives documenting (m)any of his correspondences?

The object is ~23mm in diameter and weighs 7.3g. It doesn't react to a magnet. It has a stippled surface and was recovered from a housing complex at the Hellenistic site of Jebel Khalid in Syria. Dated around 3rd century BCE. Unfortunately, I cannot analyse it chemically, as it's now lost. Grateful for any suggestions!