DEFA 550
DEFA 550 is a 30 mm autocannon or artillery family.
Also recorded as DEFA 30 mm DEFA; 30 mm DEFA; DEFA DEFA 550.
Overview
It is associated with France. Catalogue entries for arms and armour state maker, marks, mechanism and, where relevant, licensing. VALÉORINE records this subject so that lots referring to it can be described consistently.
In detail
30 mm revolver autocannon aircraft armament family
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
“DEFA cannon”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q1152952: DEFA 550
Consult the source