Sure, I’ve heard the tale. The vault’s lock was flawless, yet the silver coin slipped out during the night shift. Turns out the floor panel had a hidden seam that the guard missed. Once the thief’s boots made a faint click, the coin slid under the planks, right into a small, dust‑filled cavity. I keep that corner sealed—no one else knows it. If you want to keep a coin safe, always check the floor first.

Sure thing, let’s keep it tight. First, use a reinforced steel case—no glass, no thin walls. Then, seal the case inside a secondary lockbox that’s welded shut. Put the lockbox in the vault’s deepest, most temperature‑stable compartment, and add a small, discreet alarm that triggers if the case is moved. Finally, hide a false panel around the lockbox so only you know the exact spot. That way, even if the floor has a seam, nothing can slip out without your eyes on it.