An Egg Cup in the Shamrock Pattern by Carrigaline Pottery. The Egg Cup is decorated with Shamrock's and trimmed in Gold. It stands 1 7/8 inches tall and is in excellent condition.. The bottom is marked in green with the the bundled shamrock Logo, Carrigaline Pottery Co. Ltd., Cork Ireland. Carrigaline Pottery was in business in Cork, Ireland from 1928 until 1979.