World Coins - Costa Rica - Countermark on George III English Sixpence - 1 Real. 1849-1857 AD English sixpence as host coin. Obv: profile bust of George III with date 1816 below and GEOR III D G BRITT REX F D legend; with Type VI countermark. Rev: arms in garter. KM# 87. 2.48 grams. ("). Coin fair; countermark very fine. Scarce.