Pearl circle

It can be considered a relative or subsidiary form of the bead and reel motif.

The pearl circle appeared as early as the Greek coins of antiquity.

It is widespread on Roman coins from both Republican and Imperial times.

[1] From the 19th century onwards, the introduction of close collar minting made it possible to emboss a raised rim slightly overhanging the coin design.

This edge bar often ends inwards with a beaded circle.

Roman Aureus (36 BC AD Z.) with incompletely embossed pearl circle
Castilian Maravedi (c 1475) with bead and reel