Okay ... I _think_ it's a figure 8. That was my first impression.
But the ribbons aren't very angled, are they. I suppose it could be a Pelt.
In this case, one might consider other clues. What other marbles were found with it?
Cairo Novelty ....
I said it with a long i, rhyming with "eye". Ki-row.
But I've heard people who knew the area better calling it something closer to Kay-ro.
I sent some by mail with explanations to nieces and nephews. Didn't even get an acknowledgement.
I don't say this bitterly ... they're good kids and have sent plenty of acknowledgement of other gifts and communications ... just saying that it was a swing and a miss!