Fine "local coinage" Mexico 1/8 real or octavo real coin.Rare type struck for Zamora, KM L81.Variety with Za counterstamp.Obverse: liberty cap, bow and arrows above sprays, UN OCTAVO 1858, Za counterstamp within circle.Reverse: eagle on cactus above sprays, MUNICIPIO DE ZAMORA.Certified by NGC to Fine Details Environmental Damage (not distracting).High grade for this crude issue.