The CRT is real and was modified by the Lanshire Clock and Instrument Corporation of Chicago, IL to be a clock and still has its tag and guarantee with it. I don't know if these clocks were for Sylvania distributors or gifts for it's employees. The CRT measures 9" diagonally, 6½" tall and 8¼ wide. I assume it is from the late 40s-early 50s and was for a table top television.
There is a rubber foot on the bottom of the tube for support. The clock runs quietly and keeps time.
It comes in its original box. I added air pillows to secure it in place. I will place it in a second box with bubble wrap for its trip to its new home. What an absolutely unique advertising piece.The item "Vtg Sylvania Television Cathode Ray Picture Tube Advertising Clock with BoxRARE" is in sale since Saturday, February 15, 2020. This item is in the category "Collectibles\Advertising\Merchandise & Memorabilia\Clocks". The seller is "lakefxs" and is located in Liverpool, New York. This item can be shipped to United States, Canada, United Kingdom, Mexico, Germany, Japan, France, Australia, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Greece, Portugal, Cyprus, Slovenia, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, Hong Kong, Ireland, Netherlands, Poland, Austria, Bahamas, Israel, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay.