Fifty centimos. Obverse Costa Rica coat of arms. Seven stars represent the seven provinces, three extinct volcanoes for the three mountain ranges, two ships symbolizing the country's geographical situation between atlantic and pacific ocean and sunrise on the left NOTE: differences in detail of coat of arms exist between listed varieties.Only Type KM#189.1 has medal alignment. Lettering: REPUBLICA DE COSTA RICA 1978 Reverse Value within a laurel wreath and initials of the "Banco Central de Costa Rica" Lettering: AMERICA CENTRAL50 CENTIMOS B.C.C.R.