I completed restoration of a General Electric 7H106K Illuminated Alarm Clock. The back of the dial cleaned up nicely with melamine and water but the front yellowing could not be removed (seems to be UV / sunlight related damage). Has anyone restored UV damage from a plastic Telechron dial? I do not want to risk those plastic yellowing restoration techniques unless they are proven with the old Telechron plastic and they do not damage the dial printing.
