Costa Rica. 50 Colones 1974, Green Turtles (Chelonia mydas), Series: Wildlife Conservation, KM 200, mintage of 7599 pcs, Silver 38,6 mm, weight 25,55 g. .500, Condition aUNC

Costa Rica 50 Centimos 1970, KM 189.3, Cu-Ni 26 mm, Condition UNC, patina

Costa Rica. 100 Colones 1974, Manatee (Trichechus), Series: Wildlife Conservation, KM 201a, mintage of 11000 pcs, Silver 42 mm, weight 35,0 g. .500, Condition Proof

Costa Rica. 100 Colones 1974, Manatee, series: Conservation, KM 201a, Silver 42 mm, weight 35 g. .925, mintage 11000 pcs, Condition Proof

Costa Rica, Copper-Nickel pattern 1 centavo 1892 ("1 CENTAVO"), KM Pn6, Cu-Ni 20 mm, Condition NGC SP 66 Cameo, very rare trial struck in Cu-Ni in perefct condition
The only and highest grade for this type of coin in  NGC.

Costa Rica, 25 Centimos 1948, KM 175, Cu-Ni 23 mm, Condition BU, patina

Costa Rica. 1 Colon 1923, KM 164, counterstamped on 50 Centimos 1903 KM 143, Silver 29 mm, weight 9,90 g. .900, Condition VF+

Costa Rica 25 Centavos 1865, KM 106, Silver 24 mm, Weight 6,25 g. .750, Condition F/VF, grey patina, scarce

Costa Rica. 5 Centavos 1905, KM 145, Silver 15 mm, weight 0,98 g. .900, Condition aXF, nice patina

Costa Rica. 50 Colones 1974, Green Turtles (Chelonia mydas), Series: Wildlife Conservation, KM 200a, mintage of 11000 pcs, Silver 38,6 mm, weight 28,28 g. .500, Condition Proof

Costa Rica 2 Colones 1968, KM 187.2, Cu-Ni 32 mm, Condition UNC