My mom volunteers at the National Quilt Museum in Paducah and I just called her. She said she's heard of a coin sewn in quilts before and she thinks it's for luck...she's volunteering tomorrow so will ask the historians the significance...but yes, she's familiar with the custom, just does not know the whole story. It wouldn't be a penny carried in the wedding if it was sewn in the wedding quilt because those quilts are made long before a wedding...most were kept in hope chests. But it could have been a later quilt using the wedding penny. Maybe we'll know tomorrow evening.