Vintage Klystron Electronics valve, tube Model CV-2116 Serial No 8718 1957 vintage, made in UK Comes in original box, unable to test. This item is in the category “Collectibles\Radio, Phonograph, TV, Phone\Radios\Tube Radios\1930-49″. The seller is “photo-fun” and is located in this country: CA. This item can be shipped to Canada, United States.