120 mm Model 1926 gun
120 mm Model 1926 gun is a naval artillery or rifled breech loader.
Overview
Italian naval artillery.
In detail
It is associated with Kingdom of Italy.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“List of 120 mm Italian naval guns”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q3386660: 120 mm Model 1926 gun
Consult the source