I guess it depends on what you like and collect. I collect mostly American made marbles, just because that's what I see the most and know the most about. Having said that, I wish I knew a lot more about old Vacor production and the different types of old machine-made marbles from Europe and Asia, because I find some of them really attractive. When, I say, they "don't strike me as being from the USA", I am simply implying is that I don't recognize them as marbles made here.