180 mm gun S-23
180 mm gun S-23 is a rifled breech loader or artillery model.
Overview
Type of heavy gun.
In detail
It is associated with Soviet Union.
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
“180 mm gun S-23”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q1783461: 180 mm gun S-23
Consult the source