Bidspirit auction | Unusual patented advertising clock

Unusual patented advertising clock - Unusual patented advertising clock, circa 1920, mahogany case, front glass with reverse glass painting in gold and black and the designation ''Patent, '' large dial with black Roman numerals and blackened hands, movement with escapement pallet anchor escapement, movement marked ''Vereinigte Freiburger Uhrenfabriken, formerly Gustav Becker, '' Movement starts up, another similar movement, probably from the same workshop, is used to operate the advertising sheets; when the sheets are turned, a signal is sent to the large bells, both movements start up, very rare piece, worth collecting!!!, 96x45x24cm