M1909
M1909 is a 122 mm howitzer or artillery model.
Also recorded as 122 mm howitzer M1909; M1909 Howitzer.
Overview
1910s towed 122 mm howitzer by Krupp.
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
“122 mm howitzer M1909”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q23002660: M1909
Consult the source