Ancient Mechanism, known as Engineering of the Antique Gear (古代の機械技術) in the Japanese version, is the third Duel Puzzle in Yu-Gi-Oh! Ultimate Masters: World Championship 2006.
| Identifier (URI) | Rank |
|---|---|
| dbkwik:resource/Nt7QmJrC3668ETHcKzGFoQ== | 5.88129e-14 |