It´s very hard to find information about these markers. I guess they were one of the first layout markers ever. They were introduced to the market in the 1960s and have grown very popular for decades. The Magic Markers are produced by Royal Sovereign, Manchester. Magic Markers come in two shapes: one is very unergonomic and stubby, and until the company changed the markers ink solvent to alcohol it came in a little glass flacon. The other one is the Magic Marker Slimgrip. The Slimgrip came in a long thin aluminum barrel; the color was indicated by a sticker on the markers barrel. After discontinuing the toluene/xylene ink formula, the barrel was made of plastic. In addition, the new slim markers have two tips, one broad and one fine. The name was changed to Magic Marker Twin Tip. The glass flacon of the stubby version was also replaced by plastic, but the shape of the marker remains.
Stubby Magic Markers
In the early 1990s I had the chance to purchase a bunch of the old markers, but I took only one of the old ones… can´t remember why, I should have taken more…
Update: Got a bunch of additional glass bottle Magic Markers and a Magic Marker Slimgrip. Most of these markers still work, some need to be revived. Most of the markers came without the label on it, those with label I won´t revive to avoid destroying the old and brittle label.