200gram block

The photo on the right shows an Italian 200gram demolition charge, and was recovered in a German WW2 box.

I got the following information from Massimo about it:
This is
a demolition block produced by ACNA company. This company was founded in 1929.
The acronym meant Aziende Chimiche Nazionali ed Associate. Before 1929 the plant was producing explosives, including TNT.
In the 30's the company was sold to IG Farben and the acronym change meaning: Azienda Coloranti Nazionali ed Affini.
In late 30s the production of explosives was started again. The ACNA plants were in the North of Italy: Cengio, Cesano Maderno and Rho.