unknown

Nut and Bolt Puzzle
Nut and Bolt Puzzle

Take-apart / Stainless Steel

Designer: unknown
Maker: Sam's Magic Service
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Nut and Bolt Puzzle No 151
Nut and Bolt Puzzle No 151

Take-apart / Brass

Designer: unknown
Maker: E & S
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Oblique 6
Oblique 6

2D Packing

Designer: unknown
Maker: Woboko
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Octacube
Octacube

Pattern / Plastic

Designer: unknown
Maker: unknown
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Octagonal Prism 3x3x3
Octagonal Prism 3x3x3

Sequential Movement / Plastic

Designer: unknown
Maker: self-made
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OctaTHREEdron
OctaTHREEdron

Interlocking / Wood

Designer: unknown
Maker: Interlocking Puzzles
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Oh Mutter
Oh Mutter

Pattern / Plastic

Designer: unknown
Maker: Milton Bradley
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Old Anchor Puzzle
Old Anchor Puzzle

Disentanglement

Designer: unknown
Maker: Allen Rolfs
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Old Shackles
Old Shackles

Disentanglement / Steel

Designer: unknown
Maker: Tucker-Jones House, Inc.
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On the Level Puzzler
On the Level Puzzler

2D Packing / Plastic

Designer: unknown
Maker: Mag-nif
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On the Line
On the Line

Pattern / Plastic

Designer: unknown
Maker: Brainwright
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One O'Clock Gun Puzzle
One O'Clock Gun Puzzle

Take-apart

Designer: unknown
Maker: Crux Puzzles
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One Penny Coin Puzzle and Box
One Penny Coin Puzzle and Box

2D Jigsaw

Designer: unknown
Maker: Caledonian Coin Rings
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One Post
One Post

Disentanglement / Wood

Designer: unknown
Maker: unknown
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Orb Odyssey
Orb Odyssey

Take-apart / Brass

Designer: unknown
Maker: TotallyUnboxed (etsy)
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Orbix
Orbix

Electronic / Plastic

Designer: unknown
Maker: Milton Bradley
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Orbo
Orbo

Sequential Movement / Plastic

Designer: unknown
Maker: multiple manufacturers
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Original 3D Crystal Puzzle - Butterfly
Original 3D Crystal Puzzle - Butterfly

Assembly / Plastic

Designer: unknown
Maker: Bepuzzled
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Original 3D Crystal Puzzle - Cat & Kitten
Original 3D Crystal Puzzle - Cat & Kitten

Assembly / Plastic

Designer: unknown
Maker: Bepuzzled
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Original 3D Crystal Puzzle - Cheshire Cat
Original 3D Crystal Puzzle - Cheshire Cat

Assembly / Plastic

Designer: unknown
Maker: Bepuzzled
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Original 3D Crystal Puzzle - Chest
Original 3D Crystal Puzzle - Chest

Assembly / Plastic

Designer: unknown
Maker: Bepuzzled
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Original 3D Crystal Puzzle - Clover
Original 3D Crystal Puzzle - Clover

Assembly / Plastic

Designer: unknown
Maker: Bepuzzled
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Original 3D Crystal Puzzle - Dog
Original 3D Crystal Puzzle - Dog

Assembly / Plastic

Designer: unknown
Maker: Bepuzzled
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Original 3D Crystal Puzzle - Dog and Puppy
Original 3D Crystal Puzzle - Dog and Puppy

Assembly / Plastic

Designer: unknown
Maker: Bepuzzled
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