This piece has a decorated ribbed edge. Nice original patina, great condition, 27mm in diameter, 4.76 grams.
Before the introduction of struck coinage in Celtic lands, Celtic ring money (gold, silver and bronze rings), celtic arrowhead and bell money, were used as currency in Celtic lands in Danube area, France, England and Ireland. Sometimes these rings took a pretty elaborate shape (such as"wheel money" in Gaul, star-shaped rings, interlinked rings etc.) and are very interesting collectible items, that can also be used as wonderful pendants or finger rings.