COSTA RICA. Costa Rica - Mexico. "Carrillo" 1/2 Real, ND (1841). San Jose Mint. PCGS VF-25 Gold Shield; Countermark: VF Details.1.51 gms. KM-1 (for type); Segura-Pg.22 (Plate coin); Guardian-Pg.62/63 Type VI (this piece listed); Guttag-1453B(for type); Brunk-Pg.37#206(for type). Type I Countermark. Issued by decree of 19 November 1841 under Braulio Carrillo Colina. strongVERY/strong strongRARE/strong and the second rarest silver denomination from the series. Double 6-pointed star within circle applied to the obverse on the back of the kings neck, plug removed from the obverse; Reverse: test punch at 6 after "ET" in legend. All on an 1811-MoHJ Mexico bust 1/2 Real of Ferdinand VII. A lovely example with soft to medium grey patina and a light iridescent sheen.From the Kyle Ponterio Collection.Ex: Richard Stuart Collection.Ex: Henry Christensen Auction May 18, 1984 "The Jorge A Lines Collection" Lot # 230.