Type 89 150 mm cannon
Type 89 150 mm cannon is a fortress artillery or artillery model.
Also recorded as Type 89 15 cm Cannon.
Overview
Type of fortress gun.
In detail
It is associated with Japan.
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
“Type 89 15 cm cannon”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q3297799: Type 89 150 mm cannon
Consult the source