Banded Double Ribbon Core Swirl

Handmade in Germany in the late 1800s, this double ribbon core swirl with yellow bands measures 1 5/8".

Contemporary Double Ribbon Core

Here's an experimental double ribbon core by an unknown artist.

Banded Double Ribbon Core Swirl

Handmade in Germany in the late 1800s, this marble measures 2 3/8". The double ribbons are blue, red and white. The bands are red, white, green and yellow.