Large Vintage Czech Striped Marble in Yellow and Red Onionskin

A large (22 mm) vintage Czech marble with swirling thin yellow and red frosted stripes coming around from both sides, leaving a thin window to reveal the translucent center. Adding variety to its intriguing look, one view of this mib shows the stripes diving more toward the center, with a lone, stray thread of green/blue/black tagging along.

I've seen some of these referred to as bullet mold marbles, but don't know if that term is more accurate and appropriate than to say it has somewhat of an onionskin swirl.

In very good condition, with a few tiny pinpricks here and there, but its unusual appeal still fully intact!