340mm/45 Modèle 1912 gun
340mm/45 Modèle 1912 gun is a naval artillery or rifled breech loader.
Also recorded as 340mm/45 Modele 1912 gun.
Overview
French naval gun.
In detail
It is associated with France.
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
“340mm/45 Modèle 1912 gun”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q4030962: 340mm/45 Modèle 1912 gun
Consult the source