Walther Model 4
Walther Model 4 is a pistol or weapon model.
Overview
Blowback handgun.
In detail
It is associated with Germany and German Empire. The record gives 1910 as its date of establishment or first appearance.
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
“Walther Model 4”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q2547339: Walther Model 4
Consult the source