unknown

IQ Tester
IQ Tester

Sequential Movement / Wood

Designer: unknown
Maker: Venture Mfg. Co. Inc.
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IQ Tester II
IQ Tester II

Sequential Movement / Wood

Designer: unknown
Maker: Venture Mfg. Co. Inc.
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IQLINK Crazy Curves
IQLINK Crazy Curves

Assembly / Plastic

Designer: unknown
Maker: ZCube
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Iron Heart
Iron Heart

Disassembly / Metal

Designer: unknown
Maker: unknown
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Isn't this rabbit a duck
Isn't this rabbit a duck

Ambigous Object / Ceramic

Designer: unknown
Maker: Arcadian
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Iso-Kubes
Iso-Kubes

Assembly / Plastic

Designer: unknown
Maker: Waddingtons International Pte Ltd.
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Ivory Puzzle Ball
Ivory Puzzle Ball

Impossible Object

Designer: unknown
Maker: unknown
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J2 Triangular Prism
J2 Triangular Prism

Sequential Movement / Plastic

Designer: unknown
Maker: ZePuzzles
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Jacob's Revenge
Jacob's Revenge

Dexterity / Glass

Designer: unknown
Maker: Elverson Puzzle Company
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Japan : Puzz-ring Japan
Japan : Puzz-ring Japan

Disentanglement / Metal

Designer: unknown
Maker: Hanayama
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Japanese Burr
Japanese Burr

Burr / Ivory

Designer: unknown
Maker: Allan Boardman
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Japanese Pagoda/ Crystal Puzzle 33 Pieces
Japanese Pagoda/ Crystal Puzzle 33 Pieces

Burr / Metal

Designer: unknown
Maker: unknown
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Jiggle Puzzle - Fortune Teller
Jiggle Puzzle - Fortune Teller

Dexterity / Plastic

Designer: unknown
Maker: Comon Tatar, Inc.
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JinJiao Cube
JinJiao Cube

Sequential Movement / Plastic

Designer: unknown
Maker: Yong Jun Toys
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Jitter
Jitter

Dexterity / Plastic

Designer: unknown
Maker: Reiss Games
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Jolly [censored] Puzzle containing Pick-It-Out
Jolly [censored] Puzzle containing Pick-It-Out

Take-apart / Metal

Designer: unknown
Maker: unknown
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Jump-The-Peg
Jump-The-Peg

Sequential Movement / Wood

Designer: unknown
Maker: Compass Labs
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Jumpy
Jumpy

Dexterity / Plastic

Designer: unknown
Maker: Reiss Games
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Jungle Puzzle
Jungle Puzzle

Sliding / Plastic

Designer: unknown
Maker: Pussycat
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Jungle Puzzle - Back to Nature Part 1
Jungle Puzzle - Back to Nature Part 1

Disentanglement / Wood

Designer: unknown
Maker: Rahman Bah Tuin
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Jungle Smart
Jungle Smart

Sequential Movement / Wood

Designer: unknown
Maker: FoxMind
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Just Have Patience
Just Have Patience

Put-together / Wood

Designer: unknown
Maker: Mr Puzzle (Brian Young)
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K-Ball 8
K-Ball 8

Sequential Movement / Plastic

Designer: unknown
Maker: International Marketing and Licensing Limited
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K.O. Labyrinth
K.O. Labyrinth

Sequential Movement / Plastic

Designer: unknown
Maker: Lepato Co. Ltd.
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