Hispano-Suiza HS.831

Hispano-Suiza HS.831 is an autocannon or artillery model.

Also recorded as Oerlikon KCB.

In detail

It is associated with Switzerland.

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
“Oerlikon KCB”, English Wikipedia, consulted as further reading
Consult the source
reference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q28501711: Hispano-Suiza HS.831
Consult the source