A magic lantern predates movies and slide. Essentially, it was a pre-electric version of a slide projector.
Mine is about ten inches tall, comes with the original box and slides, and has the little metal oil lantern that provided the light source.
|Magic Lantern circa 1905|
As I dug into this, I discovered online the Magic Lantern Society. They say; Introduced in the 1600's, the magic lantern was the earliest form of slide projector and has a long and fascinating history. The first magic lanterns were illuminated by candles, but as technology evolved they were lit by kerosene, limelight, carbon arc, and electric light.
I emailed them and quickly got this response: The Encyclopedia of the Magic Lantern does not cite GBN, but the companies making toy lanterns were mostly in Nuremburg, Germany. You are fortunate to have the box and slides that fit as well as the lantern. Is there an illuminant? Toy lanterns were very popular for children in the late 19th and early 20th centuries. You see them in movies such as Fanny and Alexander. Magic lanterns were once a premium for a childrens' magazine in the early 20th century. They were used both to entertain but also to teach.
Larger lanterns were used in schools, churches, Secret Societies, and as the machine that brought Illustrated Lectures of travel, science, history and religion to the citizens of towns all across the country, We estimate there were over 100,000 magic lantern showmen, ie, people, mostly but not all men, who gave lectures and shows using the magic lantern. If you go on ebay you will see the wide range of magic lantern slides still in circulation.
If you are interested in the Magic Lantern and want to know more, the Magic Lantern Society has a quarterly research Journal that it publishes and a monthly enews letter of less scholarly news. We have a bi-annual convention. If you are on the West Coast, it is a great chance to meet other collectors and to mine their knowledge of yourlantern and other interests. We are an interesting group of people who collect lanterns, or slides or ephemera or whatever about the lantern and the culture around it. It was everywhere in the 19th and 20th centuries.