QF 12 pounder 12 cwt gun
QF 12 pounder 12 cwt gun is a rifled breech loader or quick-firing gun.
Also recorded as 76L40 naval gun 12-pdr 12-cwt; 12 pounder 12 cwt naval gun; 3"/40 naval gun 12-pdr 12-cwt; 12-pdr QF gun.
Overview
1894 British naval artillery by Armstrong Whitworth.
In detail
It is associated with United Kingdom of Great Britain and Ireland.
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
“QF 12-pounder 12 cwt naval gun”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q1360084: QF 12 pounder 12 cwt gun
Consult the source