Genuine Sea Urchin & Limpet Shell Necklace vintage 1970s New Old Stock. Approximately 23" of sea urchin shells with a single Limpet Shell. Shipping for combined orders from my shop will never exceed $3.75 & orders over $35 Ship Free to USA Sea Urchin Necklace With A Polished Lempet Shell, New Old Stock 1970S