$21.99 Buy It Now or Best Offer
free,30-Day Returns
Seller Store teamjb.hobbies
(3632) 100.0%,
Location: Springboro, Ohio
Ships to: US,
Item: 166777099825
Return shipping will be paid by:Seller
All returns accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money Back
Return policy details:
Team JB Hobbies:Team JB Hobbies
Material:PLA
MPN:Does Not Apply
Shape:Key
Type:Sliding Puzzle
Size:See Description
Theme:Sliding Puzzle
Year:Unknown
Oskar Key v2 – Level 7 – Oskar van Deventer – Team JB Hobbies Oskar Key Designed by: Oskar van Deventer Produced by: Team JB Hobbies A Timeless Puzzle with a New Twist Introducing the Oskar Key, a challenging and historically significant puzzle designed by the renowned Oskar van Deventer. Originally conceived in 1987 and based on an idea from 1984, this two-layer puzzle key was first mass-produced in metal by the Japanese Hanayama toy company. As the very first licensed design by Hanayama, it has become a sought-after collector’s item, with vintage samples occasionally selling for 1000 USD on eBay. Goal: Navigate the keys through the maze and unlock the puzzle. Level: 7/10 To add to the challenge, a third key has been incorporated into the middle layer, increasing the complexity and providing an engaging puzzle experience for enthusiasts. The underlying mathematical concept is based on Prof. N.G. de Bruijn’s Beer Bottle Problem, which proves that such puzzles are always solvable. Features: Dimensions: 4″ x 2.5″ x 0.85″ Material: High-quality 3D printed components Design: Multi-layered key mechanism for an added challenge The Oskar Key is more than just a puzzle; it’s a piece of history brought back to life through modern 3D printing technology. Whether you’re a seasoned puzzler or a collector of unique designs, the Oskar Key offers a satisfying and intellectually stimulating experience. Specifications Specifications Brand: Team JB Hobbies Designed By: Oskar van Deventer Dimensions: 4″ x 2.5″ x 0.85″ Color: Blue/Black Material: PLA Weight: 1oz Shipping Shipping We offer fast and free same day shipping, check out the eBay shipping tab for more details. Returns Returns 30 day money back guarantee. If for any reason you are not satisfied with your product return it, no questions asked. Returns are accepted if the item is in the same condition as it was received. We pride ourselves on our customer service. In the rare event that you have a problem with your item please contact us and we will be happy to help. About Us We are a husband and wife duo from Southwest Ohio selling on eBay since 2013. Our mission is to provide quality hobby supplies with fast and FREE shipping. Our primary focus is on RC car parts, papercrafting tools, and puzzles. We pride ourselves in our customer service and offer same day shipping. Do not hesitate to contact us with any questions or concerns!
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