The Angelus clock was bench tested and it keeps proper time.
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Emil Brenk started crafting high quality enamel in Pforzheim Germany in the early 1900s and crafted the highest quality enameled bird box cases for Karl Griesbaum.
I ONLY FOUND ONE OTHER EXAMPLE OF THIS RARE BIRDBOX. AN AUSTRALIAN MUSEUM HAS ONE ON DISPLAY BUT THERE PIECE DOES NOT PROPERLY WORK
I WENT THROUGH THE MECHANISM, BELLOWS, WHISTLE AND BIRD AND THIS BIRD BOX OPERATES AS IT SHOULD. THE BIRD ALARM IS AMAZING.
COMES WITH A BIRD SHAPED WINDING KEY