Seller: drac (14,975) 100%, Location: Atkinson, New Hampshire, Ships to: Worldwide, Item: 381838356598 If you have difficulty seeing the right edge, hold the left button while sliding mouse to the right. PUBLICITY CLOCK Co. Inc. Clockworks C:1920 in-Theater Advertising Device. All brass advertising projection clockworks. 11" x 10.5" x 4" deep. The last photo shows an advertisement for this clock (this ad is for reference and NOT included) with an advertising disk in place. This sale includes only the works pictured and is sold as-is and in need of restoration. The works appear to be in good condition and they do rotate the hands seen around the edge of the clear glass dial through which the advertising was projected. Not that one hand has broken from the rim, the other is intact. This is a very rare clock. I was unable to locate any of these via internet. The Publicity Clock Company, an advertising firm in New York City from around 1915 to at least 1930, placed advertisements in local movie theaters by means of the Publicity Clock, a device that projected the image of a working clock face with a repeating sequence of advertisements displayed within the dial. The Publicity Clock Co. engaged advertisers, collected fees from them, and supplied the advertising transparencies for the device. Theaters received a portion of the proceeds for projecting the colorful image on the wall near the movie screen. With regard to Sidewalk Ad Service: "Located at 105 West 40th St. in New York City. Business would design an advertisement, then 'broadcast' it via a light beam onto the sidewalk in front of the business: Your complete sales message told in bright colorful light--where every passerby must see it!” Throughout the 1920s and perhaps later, the company was located at 105 West 40th Street and run for a number of years by Leslie Neuberger, the brother of Roy R. Neuberger, the founder of Neuberger Berman. The mechanism that intermittently changed the advertisements (Automated Advertising Clock) was patented by John U. Barr on July 20, 1915, patent number 1,146,839. Buy Without Fear You can feel safe when bidding on my items. I've been an eBay seller since 1997 and I have never changed my ID. Free Insurance is provided to USA destinations.