Type 90 240 mm railway gun
Type 90 240 mm railway gun is a railway gun or artillery model.
Overview
Type of railway 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 90 240 mm railway gun”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q5970527: Type 90 240 mm railway gun
Consult the source