Antique Wooden Display with Dovetail Corner joints .Lock but no key .LOCKED SHUT

Sides with Dovetail joints must be Plywood at Ply visible in joints and chip to base front edge corner. LOCKED SHUT AS STATED. THIS DISPLAY IS LOCKED CLOSED. Wooden base 12 in. ( 30.5cm x 25.5cm ). The base panel is screwed in - you may be able to unscrew base and remove inner lock ( I can see that is screwed to inner ??).

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