| Manufacturer | Koontz |
| Model Number | 7290014566538 |
Uncover the secret of an ancient puzzle that we still use today! Following the step-by-step building guide, start piecing together the fourteen cardboard pieces to discover the inner workings of a technology that dates back to the Roman Empire. Then, once you've found the secret and locked it all up, see if your friends have what it takes to crack the code and release the ring.
It might be made of nothing but cardboard, but it's sure to stump them every time! Discover how old doesn't necessarily mean dumb with the fascinating and eco-friendly Koontz Combination Lock building kit.
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