Likely a reproduction of the Joe Porper Strong Box, but still well made and operates smoothly.
 
Unlike a standard Lippincott box, this version can begin fully locked from the start. A spectator can even hold it, secure it themselves, and keep the key if you want.
 
When you're ready, it opens in an instant so you can secretly load a billet, ring, or other small item. Once closed again, it practically locks itself, making the whole sequence feel effortless and impossible.
 
CONDITION NOTES:  The manufacturer is unknown (Most likely generic China reproduction). It’s in very good condition and uses the same working principle as the Joe Porper Poor Man's Safe. While it doesn’t have quite the same level of refinement, it remains a very practical and reliable piece.