NNP

Ball Loop.  A part of a medallic item in the shape of a sphere which connects the medal to a form of suspension, usually a ring. The ring passes through a hole drilled in the ball loop, always parallel with the medal. The ball loop may be an integral part of the medallic item – or it may be affixed to the medal by solder. It is similar to a barrel

loop, both are shaped like their namesakes, and are in contrast to a lug (which is indistinct in shape).  See loop. 

excerpted with permission from

An Encyclopedia of Coin and Medal Technology

For Artists, Makers, Collectors and Curators

COMPILED AND WRITTEN BY D. WAYNE JOHNSON

Roger W. Burdette, Editor