254 mm 45 caliber Pattern 1891
254 mm 45 caliber Pattern 1891 is a 10 inch naval gun or artillery model.
Also recorded as 254L45 naval gun Pattern 1891; 254/45 Pattern 1891; Pattern 1891 254/45.
In detail
It is associated with Russian Empire.
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
“254 mm 45 caliber Pattern 1891”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q11849489: 254 mm 45 caliber Pattern 1891
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