I have three black dial Westclox Scotty pocket watches. All three have plastic gears and aluminum plate movements instead of brass which indicates they are newer models. None of the dials or hands on any of them glow without shining a bright flashlight on them. Then they glow brightly for about a minute and start to dim. The paint on the dials and hands is white instead of the green I've normally seen on radium dial watches and does not appear to be flaking or coming off. Is it safe to conclude that these watches do not contain radium?