Vintage Keystone Radioptican Model 411 Projector Made in Boston, USA

It looks like the model number on this Radioptican is 411 from what we can tell looking at close-up pictures of the label. Believed to be from the 1920s and made in Boston. Designed before the era of the slide projectors, it allowed users to project opague images, photographs and postcards onto a wall or screen. It relies on a pair of bright lightbulbs and reflectors. Due to the heat generated by the lightbulbs, the device features iconic metal 'chimneys' or stacks on top to allow hot air to escape. This items has not been tested. Being sold as is.