The image shows an antique Diebold Safe & Lock Co. brass anti-dynamite lock/mechanism with an 1885 patent date (Pat'd July 28, 1885).
Key Features Observed:
• Material & Design: Ornate, hand-engraved or stamped brass plate with corner mounting screws and a central warning disc.
• Warning Inscription: The circular plate reads "ANTI-DYNAMITE – CAUTION – NEVER CLOSE THE DOOR WHEN ANY PART OF THE LOCK IS REMOVED".
• Patent Date: Patented July 28, 1885.
• Function: Designed for late-19th-century bank and vault doors by the Diebold Safe & Lock Company of Canton, Ohio, featuring safety mechanisms intended to protect or disable vault locking assemblies if tampered with or exposed to explosives like dynamite

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