Filters
Brass Cannon - unknown

Sequential Discovery / Metal

Designer: unknown
Maker: Zoyo

Answer Box - Benno de Grote

Take-apart / Wood

Designer: Benno de Grote
Maker: Zoyo

Stretchy Metal Snake Cube puzzle - unknown

Folding

Designer: unknown
Maker: Zoyo

Fortress interlocking puzzle - unknown

Interlocking

Designer: unknown
Maker: Zoyo

Ring Road metal interlocking puzzle - unknown

Interlocking

Designer: unknown
Maker: Zoyo

Wan Puzzle high level metal take apart - unknown

Take-apart

Designer: unknown
Maker: Zoyo

Trilateral triangle heavy metal burr - unknown

Disassembly

Designer: unknown
Maker: Zoyo

Cross-Hatch 4 piece metal burr - unknown

Burr

Designer: unknown
Maker: Zoyo