This one is a Jabo imho.
They made many big ones like this. The ones in the background appear to be Jabo as well.
Get the Jabo Id's down and you will move on to the more "classic" marbles. I know, not as easy as it sounds.
Jabo made many variations but you will get a feel for them—trust me.
There is nothing wrong with a Jabo marble or a classic as these may be—they are just a later addition to the collecting world.
Marble—On!!