butterfly knife

butterfly knife is a pocket knife or prohibited weapon.

Also recorded as balisong; fan knife.

Overview

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

type of folding knife

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
“Butterfly knife”, English Wikipedia, consulted as further reading
Consult the source
reference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q23736: butterfly knife
Consult the source