这种纪念章50便士一个.海难的幸存者要在波塞冬神庙上挂一个脱险时留下的纪念物，这已经成为惯例。
The badges sell at 50p each . It was the practice of fortunate survivors of shipwreck to hang up some memento of their safety in one of his temples .
波塞冬神庙