What is in this image? Describe it as if you were explaining it to someone from the 15th century.

This image shows a spherically shaped decoration, roughly resembling an apple or a ball. It possesses a beautifully adorned crown-like fixture at its top, from which it can be hung, akin to a bauble of sorts. This sphere is divided into decorated bands that span its circumference, each detailed with unique designs - some bands are plain with horizontal grooves, while others are adorned with patterns of circles or triangles, resembling fine embroidery or incised metalwork. The piece is rendered solely in black and white, relying on line art to delineate its form and details, which might be suggestive of intricate metalwork or crafted ceramics, familiar to craftsmen and artisans of your time.