The second is a pretty marble. I do not believe it is American. My bet would be an early Vacor from Mexico, perhaps El Aguila.
The first is essentially a single color game marble, they were packaged with games like Chinese Checkers. It is often very difficult to tell who made a particular game marble, which doesn't matter much, since they are not really collectible. The small transparent "Clearie" in your other post would also fall into this category.